Log in

Relevant bibliographies by topics / Reductive dehydroxylation / Journal articles

To see the other types of publications on this topic, follow the link: Reductive dehydroxylation.

Journal articles on the topic 'Reductive dehydroxylation'

Author: Grafiati

Published: 20 July 2024

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Reductive dehydroxylation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Gräwert, Tobias, Ingrid Span, Adelbert Bacher, and Michael Groll. "Reductive Dehydroxylation of Allyl Alcohols by IspH Protein." Angewandte Chemie International Edition 49, no. 47 (2010): 8802–9. http://dx.doi.org/10.1002/anie.201000833.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Mostinski, Yelena, David Lankri, Yana Konovalov, Riva Nataf та Dmitry Tsvelikhovsky. "Proline-promoted dehydroxylation of α-ketols". Chemical Science 10, № 40 (2019): 9345–50. http://dx.doi.org/10.1039/c9sc02543j.

Full text

Abstract:

A new single-step proline-potassium acetate promoted reductive dehydroxylation of α-ketols is reported. We introduce the unexplored reactivity of proline and, for the first time, reveal its ability to function as a reducing agent.

APA, Harvard, Vancouver, ISO, and other styles

3

Abdel-Azeim, Safwat, Abdesslem Jedidi, Jorg Eppinger, and Luigi Cavallo. "Mechanistic insights into the reductive dehydroxylation pathway for the biosynthesis of isoprenoids promoted by the IspH enzyme." Chemical Science 6, no. 10 (2015): 5643–51. http://dx.doi.org/10.1039/c5sc01693b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Kim, Sunggak, Li Chan, and Jazreel Lim. "Iron-Catalyzed Reductive Dehydroxylation of Benzylic Alcohols Using Polymethylhydrosiloxane (PMHS)." Synlett 2011, no. 19 (2011): 2862–66. http://dx.doi.org/10.1055/s-0031-1289857.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Graewert, Tobias, Ingrid Span, Adelbert Bacher, and Michael Groll. "ChemInform Abstract: Reductive Dehydroxylation of Allyl Alcohols by IspH Protein." ChemInform 42, no. 6 (2011): no. http://dx.doi.org/10.1002/chin.201106274.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Boll, Matthias, and Georg Fuchs. "Unusual reactions involved in anaerobic metabolism of phenolic compounds." Biological Chemistry 386, no. 10 (2005): 989–97. http://dx.doi.org/10.1515/bc.2005.115.

Full text

Abstract:

AbstractAerobic bacteria use molecular oxygen as a common co-substrate for key enzymes of aromatic metabolism. In contrast, in anaerobes all oxygen-dependent reactions are replaced by a set of alternative enzymatic processes. The anaerobic degradation of phenol to a non-aromatic product involves enzymatic processes that are uniquely found in the aromatic metabolism of anaerobic bacteria: (i) ATP-dependent phenol carboxylation to 4-hydroxybenzoate via a phenylphosphate intermediate (biological Kolbe-Schmitt carboxylation); (ii) reductive dehydroxylation of 4-hydroxybenzoyl-CoA to benzoyl-CoA; a

APA, Harvard, Vancouver, ISO, and other styles

7

Szewzyk, Ulrich, Regine Szewzyk, and Bernhard Schink. "Methanogenic degradation of hydroquinone and catechol via reductive dehydroxylation to phenol." FEMS Microbiology Letters 31, no. 2 (1985): 79–87. http://dx.doi.org/10.1111/j.1574-6968.1985.tb01134.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Zhang, Jie, Hong-Kui Zhang, and Pei-Qiang Huang. "Towards stereochemical control: A short formal enantioselective total synthesis of pumiliotoxins 251D and 237A." Beilstein Journal of Organic Chemistry 9 (November 5, 2013): 2358–66. http://dx.doi.org/10.3762/bjoc.9.271.

Full text

Abstract:

A concise enantioselective synthesis of the advanced intermediate 5 for the synthesis of pumiliotoxins (Gallagher’s intermediate) is described. The synthesis started from the regio- and trans-diastereoselective (dr = 98:2) reductive 3-butenylation of (R)-3-(tert-butyldimethylsilyloxy)glutarimide 14. After O-desilylation and Dess–Martin oxidation, the resulting keto-lactam 10 was subjected to a highly trans-stereoselective addition of the methylmagnesium iodide to give carbinol 11 as sole diastereomer. An efficient ring closure procedure consisting of ozonolysis and reductive dehydroxylation pr

APA, Harvard, Vancouver, ISO, and other styles

9

Chan, Li Yan, Jazreel Seh Kai Lim, and Sunggak Kim. "ChemInform Abstract: Iron-Catalyzed Reductive Dehydroxylation of Benzylic Alcohols Using Polymethylhydrosiloxane (PMHS)." ChemInform 43, no. 15 (2012): no. http://dx.doi.org/10.1002/chin.201215029.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Boll, Matthias, Bernhard Schink, Albrecht Messerschmidt, and Peter M. H. Kroneck. "Novel bacterial molybdenum and tungsten enzymes: three-dimensional structure, spectroscopy, and reaction mechanism." Biological Chemistry 386, no. 10 (2005): 999–1006. http://dx.doi.org/10.1515/bc.2005.116.

Full text

Abstract:

Abstract The molybdenum enzymes 4-hydroxybenzoyl-CoA reductase and pyrogallol-phloroglucinol transhydroxylase and the tungsten enzyme acetylene hydratase catalyze reductive dehydroxylation reactions, i.e., transhydroxylation between phenolic residues and the addition of water to a triple bond. Such activities are unusual for this class of enzymes, which carry either a mononuclear Mo or W center. Crystallization and subsequent structural analysis by high-resolution X-ray crystallography has helped to resolve the reaction centers of these enzymes to a degree that allows us to understand the inte

APA, Harvard, Vancouver, ISO, and other styles

11

Holland, Herbert L., Ronald W. Ninniss, and Frances M. Brown. "Stereochemistry of hydrogen loss during C-21 dehydroxylation of tetrahydrodeoxycorticosterone by Eubacteriumlentum." Canadian Journal of Chemistry 67, no. 10 (1989): 1590–95. http://dx.doi.org/10.1139/v89-242.

Full text

Abstract:

The loss of hydrogen from the C-21 position of 5β-pregnane-3α,21-diol-20-one (tetrahydrodeoxycorticosterone, THDOC) during reductive removal of the 21-hydroxy group by the anaerobic bacterium Eubacteriumlentum has been shown to be selective for the pro-S position by the use of THDOC labelled with deuterium at the C-21 pro-S and C-21 pro-R positions. The labelled substrates were obtained by using the bacterium Clostridiumparaputrificum to reduce chemically prepared C-21 labelled samples of pregn-4-en-21-ol-3,20-dione (deoxycorticosterone, DOC) at C-3 and C-4 (5). The stereochemistry of deuteriu

APA, Harvard, Vancouver, ISO, and other styles

12

Becker, Jennifer G., David A. Stahl, and Bruce E. Rittmann. "Reductive Dehalogenation and Conversion of 2-Chlorophenol to 3-Chlorobenzoate in a Methanogenic Sediment Community: Implications for Predicting the Environmental Fate of Chlorinated Pollutants." Applied and Environmental Microbiology 65, no. 11 (1999): 5169–72. http://dx.doi.org/10.1128/aem.65.11.5169-5172.1999.

Full text

Abstract:

ABSTRACT Biotransformation of 2-chlorophenol by a methanogenic sediment community resulted in the transient accumulation of phenol and benzoate. 3-Chlorobenzoate was a more persistent product of 2-chlorophenol metabolism. The anaerobic biotransformation of phenol to benzoate presumably occurred via para-carboxylation and dehydroxylation reactions, which may also explain the observed conversion of 2-chlorophenol to 3-chlorobenzoate.

APA, Harvard, Vancouver, ISO, and other styles

13

Gasser, U. G., E. Jeanroy, C. Mustin, et al. "Properties of synthetic goethites with Co for Fe substitution." Clay Minerals 31, no. 4 (1996): 465–76. http://dx.doi.org/10.1180/claymin.1996.031.4.03.

Full text

Abstract:

AbstractIsomorphic substitution in goethites is common in nature and the properties of goethites generally change as a function of the degree of substitution (e.g. Al-goethites). In synthetic goethites, substitution by other elements such as Co is also known. Recent literature indicates that the influence of Al and Co on the unit-cell dimensions of goethite is similar. In contrast to Al-goethites, however, little is known about other properties of Co-goethites and in this study some properties of synthetic Co-goethites were investigated by XRD, IR, TEM, TGA and reductive dissolution techniques

APA, Harvard, Vancouver, ISO, and other styles

14

Hashimoto, Toru, Takushi Shiomi, Jun-ichi Ito та Hisao Nishiyama. "Asymmetric synthesis of α-chiral dihydrocinnamates by catalytic reductive aldol coupling and subsequent dehydroxylation". Tetrahedron 63, № 52 (2007): 12883–87. http://dx.doi.org/10.1016/j.tet.2007.10.055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Glöckler, Rainer, Andreas Tschech, and Georg Fuchs. "Reductive dehydroxylation of 4-hydroxybenzoyl-CoA to benzoyl-CoA in a denitrifying, phenol-degradingPseudomonasspecies." FEBS Letters 251, no. 1-2 (1989): 237–40. http://dx.doi.org/10.1016/0014-5793(89)81461-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Gorny, Norbert, and Bernhard Schink. "Hydroquinone degradation via reductive dehydroxylation of gentisyl-CoA by a strictly anaerobic fermenting bacterium." Archives of Microbiology 161, no. 1 (1994): 25–32. http://dx.doi.org/10.1007/bf00248890.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Gorny, N., and B. Schink. "Hydroquinone degradation via reductive dehydroxylation of gentisyl-CoA by a strictly anaerobic fermenting bacterium." Archives of Microbiology 161, no. 1 (1994): 25–32. http://dx.doi.org/10.1007/s002030050018.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Jiang, Li-Jiao, Bo Teng, Jian-Feng Zheng, Jian-Liang Ye, and Pei-Qiang Huang. "Bis-Lewis acids-catalyzed highly diastereoselective one-pot reductive dehydroxylation of chiral N,O-acetals." Tetrahedron 66, no. 1 (2010): 172–75. http://dx.doi.org/10.1016/j.tet.2009.11.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Wang, Yu-Huang, Wei Ou, Linfeng Xie, Jian-Liang Ye, and Pei-Qiang Huang. "Towards Reaction Control:cis-Diastereoselective Reductive Dehydroxylation of 5-Alkyl-4-Benzyloxy-5-Hydroxy-2-Pyrrolidinones." Asian Journal of Organic Chemistry 1, no. 4 (2012): 359–65. http://dx.doi.org/10.1002/ajoc.201200113.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Shadakshari, Uma, and Sandip K. Nayak. "Reductive dehydroxylation of Baylis–Hillman adducts with low-valent titanium reagent: syntheses of stereoselective trisubstituted alkenes." Tetrahedron 57, no. 21 (2001): 4599–602. http://dx.doi.org/10.1016/s0040-4020(01)00333-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Jobelius, Hannah, Gabriella Bianchino, Franck Borel, Philippe Chaignon, and Myriam Seemann. "The Reductive Dehydroxylation Catalyzed by IspH, a Source of Inspiration for the Development of Novel Anti-Infectives." Molecules 27, no. 3 (2022): 708. http://dx.doi.org/10.3390/molecules27030708.

Full text

Abstract:

The non-mevalonate or also called MEP pathway is an essential route for the biosynthesis of isoprenoid precursors in most bacteria and in microorganisms belonging to the Apicomplexa phylum, such as the parasite responsible for malaria. The absence of this pathway in mammalians makes it an interesting target for the discovery of novel anti-infectives. As last enzyme of this pathway, IspH is an oxygen sensitive [4Fe-4S] metalloenzyme that catalyzes 2H+/2e- reductions and a water elimination by involving non-conventional bioinorganic and bioorganometallic intermediates. After a detailed descripti

APA, Harvard, Vancouver, ISO, and other styles

22

Shadakshari, Uma, and Sandip K. Nayak. "ChemInform Abstract: Reductive Dehydroxylation of Baylis-Hillman Adducts with Low-Valent Titanium Reagent: Syntheses of Stereoselective Trisubstituted Alkenes." ChemInform 32, no. 35 (2010): no. http://dx.doi.org/10.1002/chin.200135028.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Chandrasekhar, S., G. Chandrashekar, K. Vijeender, and M. Srinivasa Reddy. "Synthesis of trisubstituted alkenes by reductive dehydroxylation of Baylis–Hillman adducts using polymethylhydrosiloxane (PMHS) and catalytic B(C6F5)3." Tetrahedron Letters 47, no. 20 (2006): 3475–78. http://dx.doi.org/10.1016/j.tetlet.2006.03.014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Prakash, Dhan, Ravi Kumar, R. K. Jain, and B. N. Tiwary. "Novel Pathway for the Degradation of 2-Chloro-4-Nitrobenzoic Acid by Acinetobacter sp. Strain RKJ12." Applied and Environmental Microbiology 77, no. 18 (2011): 6606–13. http://dx.doi.org/10.1128/aem.00685-11.

Full text

Abstract:

ABSTRACTThe organismAcinetobactersp. RKJ12 is capable of utilizing 2-chloro-4-nitrobenzoic acid (2C4NBA) as a sole source of carbon, nitrogen, and energy. In the degradation of 2C4NBA by strain RKJ12, various metabolites were isolated and identified by a combination of chromatographic, spectroscopic, and enzymatic activities, revealing a novel assimilation pathway involving both oxidative and reductive catabolic mechanisms. The metabolism of 2C4NBA was initiated by oxidativeorthodehalogenation, leading to the formation of 2-hydroxy-4-nitrobenzoic acid (2H4NBA), which subsequently was metaboliz

APA, Harvard, Vancouver, ISO, and other styles

25

Shin, Bok-Kyu, Joong-Hoon Ahn, and Jaehong Han. "N-Terminal Region of GbIspH1,Ginkgo bilobaIspH Type 1, May Be Involved in the pH-Dependent Regulation of Enzyme Activity." Bioinorganic Chemistry and Applications 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/241479.

Full text

Abstract:

GbIspH1, IspH type 1 inGinkgo bilobachloroplast, is the Fe/S enzyme catalyzing the reductive dehydroxylation of HMBPP to isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP) at the final step of methylerythritol phosphate pathway in chloroplast. Compared to the bacterial IspH, plant IspH, including GbIspH1, has an additional polypeptide chain at theN-terminus. Here, biochemical function of theN-terminal region of GbIspH1 was investigated with theN-terminal truncated GbIspH1 (GbIspH1-truncated). Both wild type GbIspH1 (GbIspH1-full) and GbIspH1-truncated were catalytically active

APA, Harvard, Vancouver, ISO, and other styles

26

Aprilliza AM, Mozart Nuzul, Yenny Nur Anggraeny, and Elizabeth Wina. "The Role of Catechin Compounds and Its Derivates to Mitigate Methane Gas Production in the Rumen Fermentation." Indonesian Bulletin of Animal and Veterinary Sciences 31, no. 1 (2021): 13. http://dx.doi.org/10.14334/wartazoa.v31i1.2548.

Full text

Abstract:

Enteric fermentation and its corresponding to methane emissions take place in many wild and domestic ruminant species, such as deer, buffalo, cattle, goats, sheep. Ruminant animals are different from other animals in that they have a rumen, a large fore-stomach with a complex microbial environment. A resulting of this process is methane (CH4), which has a global warming potential (25 times that of carbon dioxide (CO2)). Because the digestion process is not 100% efficient, some of the energy intake is lost in the form of methane. Recently, natural plant products, such as tea leaves which are of

APA, Harvard, Vancouver, ISO, and other styles

27

Murdiati, TB, CS McSweeney, and JB Lowry. "Metabolism in sheep of gallic acid, tannic acid and hydrolysable tannin from Terminalia oblongata." Australian Journal of Agricultural Research 43, no. 6 (1992): 1307. http://dx.doi.org/10.1071/ar9921307.

Full text

Abstract:

Hydrolysable tannin (HT) is present in a variety of tropical browse plants, some of which poison ruminants. In an attempt to clarify the toxic action, we investigated the major urinary metabolites resulting from dosing of sheep with the HT, tannic acid; its simplest and major phenolic component, gallic acid; and the HT-containing and toxic Terminalia oblongata. Phenolic metabolites were separated by HPLC and their structures investigated by proton and 13C NMR. Gallic acid was less toxic (w/w) than tannic acid. Comparison of urinary metabolites from rumen and abomasal administration indicated t

APA, Harvard, Vancouver, ISO, and other styles

28

Gallert, C., and J. Winter. "Anaerobic degradation of 4-hydroxybenzoate: reductive dehydroxylation of 4-hydroxybenzoyl-CoA and ATP formation during 4-hydroxybenzoate decarboxylation by the phenol-metabolizing bacteria of a stable, strictly anaerobic consortium." Applied Microbiology and Biotechnology 42, no. 2-3 (1994): 408–14. http://dx.doi.org/10.1007/s002530050271.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Gallert, C., and J. Winter. "Anaerobic degradation of 4-hydroxybenzoate: Reductive dehydroxylation of 4-hydroxybenzoyl-CoA and ATP formation during 4-hydroxybenzoate decarboxylation by the phenol-metabolizing bacteria of a stable, strictly anaerobic consortium." Applied Microbiology and Biotechnology 42, no. 2-3 (1994): 408–14. http://dx.doi.org/10.1007/bf00902750.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

O'Connor, F., W. H. Cheung, and M. Valix. "Reduction roasting of limonite ores: effect of dehydroxylation." International Journal of Mineral Processing 80, no. 2-4 (2006): 88–99. http://dx.doi.org/10.1016/j.minpro.2004.05.003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Xie, Hao, Sheng Wang, Yuquan Wang, Peng Guo, and Xing-Zhong Shu. "Ti-Catalyzed Reductive Dehydroxylative Vinylation of Tertiary Alcohols." ACS Catalysis 12, no. 2 (2022): 1018–23. http://dx.doi.org/10.1021/acscatal.1c05530.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Zhang, Hongen, Lang Li, Tao Long, et al. "The Effect of Ordinary Portland Cement Substitution on the Thermal Stability of Geopolymer Concrete." Materials 12, no. 16 (2019): 2501. http://dx.doi.org/10.3390/ma12162501.

Full text

Abstract:

The influence of using cement on the residual properties of fly ash geopolymer concrete (FAGC) after exposure to high temperature of up to 800 °C was studied in terms of mass loss, residual compressive strength and microstructure. The mass loss was found to increase with the increase of exposure temperature, which is attributed to vaporization of water and dehydroxylation of sodium aluminosilicate hydrate (N-A-S-H) gels. The dehydroxylation of calcium silicate hydrate (C-S-H) gels and the disintegration of portlandite were responsible for higher mass loss ratio of FAGCs containing cement. The

APA, Harvard, Vancouver, ISO, and other styles

33

Mouttaki, Housna, Mark A. Nanny, and Michael J. McInerney. "Metabolism of Hydroxylated and Fluorinated Benzoates by Syntrophus aciditrophicus and Detection of a Fluorodiene Metabolite." Applied and Environmental Microbiology 75, no. 4 (2008): 998–1004. http://dx.doi.org/10.1128/aem.01870-08.

Full text

Abstract:

ABSTRACT Transformations of 2-hydroxybenzoate and fluorobenzoate isomers were investigated in the strictly anaerobic Syntrophus aciditrophicus to gain insight into the initial steps of the metabolism of aromatic acids. 2-Hydroxybenzoate was metabolized to methane and acetate by S. aciditrophicus and Methanospirillum hungatei cocultures and reduced to cyclohexane carboxylate by pure cultures of S. aciditrophicus when grown in the presence of crotonate. Under both conditions, transient accumulation of benzoate but not phenol was observed, indicating that dehydroxylation occurred prior to ring re

APA, Harvard, Vancouver, ISO, and other styles

34

Puhakka, Jaakko A., Päivi M. Mäkinen, Margareta Lundin, and John F. Ferguson. "Aerobic and Anaerobic Biotransformations and Treatment of Chlorinated Pulp Bleach Waste Constituents." Water Science and Technology 29, no. 5-6 (1994): 73–80. http://dx.doi.org/10.2166/wst.1994.0703.

Full text

Abstract:

Biotransformations and treatment of several chlorinated, hydroxylated and methoxylated monoaromatic compounds were studied in batch bottle bioassays and continuous-flow fluidized-bed reactors. With the aerobic enrichment, polychlorinated phenols were biodegraded with simultaneous release of inorganic chloride in amounts equal to mineralization stoichiometrics. Aerobic removal of 4,5-dichlorocatechol and 4,5- dichlorovanillin were associated with the release of inorganic chlorine. The aerobic enrichment showed no activity against mono- or di-O-methylated phenols. With the anaerobic enrichment,

APA, Harvard, Vancouver, ISO, and other styles

35

Grbic-Galic, D. "O-Demethylation, dehydroxylation, ring-reduction and cleavage of aromatic substrates by Enterobacteriaceae under anaerobic conditions." Journal of Applied Bacteriology 61, no. 6 (1986): 491–97. http://dx.doi.org/10.1111/j.1365-2672.1986.tb01721.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Franco, F., L. A. Pérez-Maqueda, and J. L. Pérez-Rodríguez. "Influence of the particle-size reduction by ultrasound treatment on the dehydroxylation process of kaolinites." Journal of Thermal Analysis and Calorimetry 78, no. 3 (2004): 1043–55. http://dx.doi.org/10.1007/s10973-005-0469-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Garcia, Villalba Rocio, Riquelme David Beltrán, Lisón María Dolores Frutos, Victoria Selma, Juan Carlos Espín, and Francisco Tomas-Barberan. "Metabolism of different dietary phenolic compounds by the urolithin-producing humangut bacteria Gordonibacter urolithinfaciens and Ellagibacter isourolithinifaciens." Food and Function 11, no. 8 (2020): 7012–22. https://doi.org/10.1039/d0fo01649g.

Full text

Abstract:

Gordonibacter urolithinfaciens and Ellagibacter isourolithinifaciens are two human gut bacterial speciesthat convert ellagic acid into urolithins. Urolithins are bioactive postbiotics produced by dehydroxylationreactions catalyzed by different catechol-dehydroxylases. The metabolic ability of these anaerobic bacteriaon other dietary-phenolic compounds is unknown. In the present study, we evaluated the metabolismof flavonoids (quercetin, hesperetin, hesperidin, nobiletin, catechin, isoxanthohumol), isoflavonoids(daidzein), coumarins (esculetin, umbelliferone, scoparone), phenylpropanoids [caffe

APA, Harvard, Vancouver, ISO, and other styles

38

Soedarsono, Johny Wahyuadi, Adji Kawigraha, Rianti Dewi Sulamet-Ariobimo, M. Amryl Asy'ari, Andre Yosi, and Eko Mulia Putra. "The Influence of Coal and Reduction Process Parameters in Producing Iron Nugget." Advanced Materials Research 789 (September 2013): 517–21. http://dx.doi.org/10.4028/www.scientific.net/amr.789.517.

Full text

Abstract:

Limitation of iron ore reserve having high quality ore and of energy has enhanced development in iron and steel producing technology and method. The ITmk3 process is one of iron making technology that can cope with the problems. It uses composite pellet as feeding material. In this process the ratio between iron and carbon are very important. Carbon holds an important role in the reduction process of iron. The transformation from iron oxides to iron metal will complete if composite pellet contains enough carbon. This paper discusses the influence of carbon ratio in iron reduction process. Nick

APA, Harvard, Vancouver, ISO, and other styles

39

Jang, Kyoung-oh, Venkata R. M. Nunna, Sarath Hapugoda, Anh V. Nguyen, and Warren J. Bruckard. "Chemical and mineral transformation of a low grade goethite ore by dehydroxylation, reduction roasting and magnetic separation." Minerals Engineering 60 (June 2014): 14–22. http://dx.doi.org/10.1016/j.mineng.2014.01.021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Zhou, S. W., C. Lu, B. Zhang, B. Li, and Y. G. Wei. "Investigation on the garnierite and limonite mixed laterite ore for nickel recovery." Journal of Mining and Metallurgy, Section B: Metallurgy 57, no. 2 (2021): 245–52. http://dx.doi.org/10.2298/jmmb201129020z.

Full text

Abstract:

Laterite, as an important resource of nickel, has become the focus of development and utilization. This study adopted the method of mixing ore (garnierite and limonite) to increase the recovery rate of nickel in garnierite ore. The phase transformation of the two ores was investigated during the heating process; dehydroxylation and recrystallization were observed and the iron oxides phase was finally transformed into the iron-containing spinel. By changing the proportion of the two ores, increasing the iron content in the sample was beneficial to the reduction of nickel. Then, Fe2O3, Fe3O4, an

APA, Harvard, Vancouver, ISO, and other styles

41

Guo, Wei, Libin Yang, Jinghao Lu, Peng Gao, Wenjing Li, and Zhiying Feng. "An Accurate Growth Mechanism and Photocatalytic Degradation Rhodamine B of Crystalline Nb2O5 Nanotube Arrays." Catalysts 10, no. 12 (2020): 1480. http://dx.doi.org/10.3390/catal10121480.

Full text

Abstract:

To effectively improve photocatalytic activity, the morphology and crystallinity of semiconductor photocatalysts must be precisely controlled during the formation process. Self-aligned Nb2O5 nanotube arrays have been successfully fabricated using the electrochemical anodization method. A novel growth mechanism of Nb2O5 nanotubes has been proposed. Starting from the initial oxidation process, the “multi-point” corrosion of fluoride ions is a key factor in the formation of nanotube arrays. The inner diameter and wall thickness of the nanotubes present a gradually increasing trend with increased

APA, Harvard, Vancouver, ISO, and other styles

42

Kawigraha, Adji, Johny Wahyuadi Soedarsono, Sri Harjanto, and Pramusanto. "Thermogravimetric Analysis of the Reduction of Iron Ore with Hydroxyl Content." Advanced Materials Research 774-776 (September 2013): 682–86. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.682.

Full text

Abstract:

Iron ore with high hydroxyl content such as goethit is widely spread in Indonesia. Such iron ore is not used as feed in ironmaking industry. However due to limitation of primary iron ore reserve such material is an option to substitute the conventional iron ore. Unfortunately the characteristic of iron ore with high hydroxyl content is totally different to conventional iron ore. Such iron ore contains hydroxyl part that can be released at high temperature. This research uses composite pellet which is mixture of iron ore and coal. The iron ore contains goethite which is one of iron phase. The c

APA, Harvard, Vancouver, ISO, and other styles

43

Krajči, Ľudovít, Ivan Janotka, Marta Kuliffayova, and Peter Uhlik. "Effect of Metakaolin Sand on Properties of Cement Composites." Advanced Materials Research 897 (February 2014): 176–79. http://dx.doi.org/10.4028/www.scientific.net/amr.897.176.

Full text

Abstract:

The Slovak natural raw material kaolin sand containing 36 wt.% of kaolinite from Vyšný Petrovec deposit was thermally transformed at 650 °C for 1 hour to the metakaolin sand with relevant content of metakaolinite. Behaviour of cement composites having replacement of Portland cement with metakaolin sand including 0; 5; 10 and 15 wt.% of metakaolinite and water to solids ratio of 0.5 cured in water for 28 days and 90 days was studied by thermal analysis, X-ray diffraction analysis and mercury intrusion porosimetry analysis. The study concerned calciumsilica hydrate and calcium aluminate hydrat

APA, Harvard, Vancouver, ISO, and other styles

44

Maziarz, Paulina, and Jakub Matusik. "The effect of acid activation and calcination of halloysite on the efficiency and selectivity of Pb(II), Cd(II), Zn(II) and As(V) uptake." Clay Minerals 51, no. 3 (2016): 385–94. http://dx.doi.org/10.1180/claymin.2016.051.3.06.

Full text

Abstract:

AbstractThe present study investigated the efficiency and mechanisms of aqueous Pb(II), Cd(II), Zn(II) and As(V) adsorption on natural (H), calcined (HC), and acid-activated halloysite (HA). The XRD and FTIR measurements indicated that the aluminosilicate framework was not affected by high-temperature treatment, in contrast to acid activation, which led to structural changes mainly in the tetrahedral sheet. The sorption of cations on H sample was low, though it was most effective for As(V). The X-ray photoelectron spectroscopy results suggested that removal of As(V) might be related to its red

APA, Harvard, Vancouver, ISO, and other styles

45

Sharma, Renu. "Design and Applications of Environmental Cell Transmission Electron Microscope for In Situ Observations of Gas–Solid Reactions." Microscopy and Microanalysis 7, no. 6 (2001): 494–506. http://dx.doi.org/10.1007/s10005-001-0015-1.

Full text

Abstract:

AbstractThe environmental transmission electron microscopy (E-TEM) is a budding technique for in situ study of gas–solid chemical reactions with numerous applications. Recent improvements in the design have made it possible not only to obtain atomic level information but also the chemical information during the reaction by incorporating an imaging filter or electron energy-loss spectrometer to an E-TEM. We have been involved in modifying a couple of microscopes to incorporate environmental cells in order to convert them into E-TEMs. These microscopes have been used to obtain atomic level infor

APA, Harvard, Vancouver, ISO, and other styles

46

Mikhailova, Olesia, and Pavel Rovnaník. "Effect of Polymer Admixtures on Metakaolin-Based Geopolymer." Materials Science Forum 865 (August 2016): 67–71. http://dx.doi.org/10.4028/www.scientific.net/msf.865.67.

Full text

Abstract:

Geopolymers are presented in many studies as binders alternative to ordinary Portland cement. Several inorganic materials have been used as raw materials for the production of geopolymers. One of them is metakaolin which is produced by dehydroxylation of kaolin. Metakaolin has a much larger surface area than cement, resulting in an increase in water demand to maintain workability. Polymer admixtures may contribute to reduction of this demand. However, another problem should be considered: plasticizers which improve rheological properties in cement technology are not effective for geopolymers.

APA, Harvard, Vancouver, ISO, and other styles

47

Liu, Yonglong, Siyu Zhu, Jianan Huang, Xinyu Ye, Chunxiao Liu, and Liaolin Zhang. "Fabrication of High-Quality Er3+-Yb3+ Co-Doped Phosphate Glasses with Low Residual Hydroxyl Group Content." Solids 6, no. 2 (2025): 21. https://doi.org/10.3390/solids6020021.

Full text

Abstract:

Rare earth-doped phosphate glasses have found widespread application in the field of solid-state and fiber laser technologies. Nevertheless, the fabrication of high-quality rare earth-doped phosphate glasses with minimal residual hydroxyl groups remains a significant challenge. To address this, a two-step melting process was utilized in this work to synthesize Er3+-Yb3+ co-doped phosphate glasses with low residual hydroxyl group content and improved optical quality. When re-melted under a N2 atmosphere at 900 °C for 12 to 16 h, the hydroxyl absorption coefficient (α-OH) decreased to ~1 cm−1. T

APA, Harvard, Vancouver, ISO, and other styles

48

BRACKMANN, Ruth, and Georg FUCHS. "Enzymes of anaerobic metabolism of phenolic compounds. 4-Hydroxybenzoyl-CoA reductase (dehydroxylating) from a denitrifying Pseudomonas species." European Journal of Biochemistry 213, no. 1 (1993): 563–71. http://dx.doi.org/10.1111/j.1432-1033.1993.tb17795.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Peters, Franziska, Dimitri Heintz, Jörg Johannes, Alain van Dorsselaer, and Matthias Boll. "Genes, Enzymes, and Regulation of para-Cresol Metabolism in Geobacter metallireducens." Journal of Bacteriology 189, no. 13 (2007): 4729–38. http://dx.doi.org/10.1128/jb.00260-07.

Full text

Abstract:

ABSTRACT In aerobic and facultatively anaerobic bacteria, the degradation of para-cresol (p-cresol) involves the initial hydroxylation to p-hydroxybenzyl alcohol by water catalyzed by the soluble, periplasmatic flavocytochrome p-cresol methylhydroxylase (PCMH; α2β2 composition). In denitrifying bacteria the further metabolism proceeds via oxidation to p-hydroxybenzoate, the formation of p-hydroxybenzoyl-coenzyme A (CoA), and the subsequent dehydroxylation of the latter to benzoyl-CoA by reduction. In contrast, the strictly anaerobic Desulfobacterium cetonicum degrades p-cresol by addition to f

APA, Harvard, Vancouver, ISO, and other styles

50

Wang, Yang, Wubiao Duan, Bo Liu, Xidong Chen, Feihua Yang, and Jianping Guo. "The Effects of Doping Copper and Mesoporous Structure on Photocatalytic Properties of TiO2." Journal of Nanomaterials 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/178152.

Full text

Abstract:

This paper describes a system for the synthesis of Cu-doped mesoporous TiO2nanoparticles by a hydrothermal method at relatively low temperatures. The technique used is to dope the as-prepared mesoporous TiO2system with copper. In this method, the copper species with the form of Cu1+, which was attributed to the reduction effect of dehydroxylation and evidenced by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD), was well dispersed in the optimal concentration 1 wt.% Cu-doped mesoporous TiO2. In this as-prepared mesoporous TiO2system, original particles with a size of approxim

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!