Bibliografías temáticas / Catalyst. Al-MCM-41 mesoporous molecular sieves / Artículos de revistas
Siga este enlace para ver otros tipos de publicaciones sobre el tema: Catalyst. Al-MCM-41 mesoporous molecular sieves.

Artículos de revistas sobre el tema "Catalyst. Al-MCM-41 mesoporous molecular sieves"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 14 de febrero de 2022

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte los 50 mejores artículos de revistas para su investigación sobre el tema "Catalyst. Al-MCM-41 mesoporous molecular sieves".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Explore artículos de revistas sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.

1

Zhou, Hua Feng, Yong Jin Yang, and Jin Son Zhang. "Catalytic Synthesis of Dioctyl Phthalate over Al-MCM-41 Molecular Sieves." Advanced Materials Research 306-307 (August 2011): 1741–46. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1741.

Texto completo
Resumen
In this paper, mesoporous MCM-41 and Al-MCM-41(Si/Al =100, 70, 40, 10, 5) molecular sieves were synthesized by direct hydrothermal process and characterized by various analytical techniques. Their catalytic performance in the synthesis of dioctyl phthalate (DOP) was also studied. The results show that while keeping the mesostructure of Al-MCM-41(Si/Al=100, 70, 40), increasing Al content can increase the acidity and so forth effectively improve the catalytic activity. But too much aluminum incorporation can destroy the structure of Al-MCM-41(Si/Al=10). The Al-MCM-41 molecular sieves with proper
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Balcar, Hynek, Jan Sedláček, Jan Svoboda, Naděžda Žilková, Jiří Rathouský, and Jiří Vohlídal. "Hybrid Catalysts for Acetylenes Polymerization Prepared by Anchoring [Rh(cod)Cl]2 on MCM-41, MCM-48 and SBA-15 Mesoporous Molecular Sieves - The Effect of Support Structure on Catalytic Activity in Polymerization of Phenylacetylene and 4-Ethynyl-N-{4-[(trimethylsilyl)ethynyl]benzylidene}aniline." Collection of Czechoslovak Chemical Communications 68, no. 10 (2003): 1861–76. http://dx.doi.org/10.1135/cccc20031861.

Texto completo
Resumen
Hybrid catalysts for polymerization of acetylenes were prepared by anchoring, via (3-aminopropyl)trimethoxysilane linker, the [Rh(cod)Cl]2 complex on siliceous mesoporous molecular sieves differing in the pore size and architecture (MCM-41, MCM-48 and SBA-15). In comparison with [Rh(cod)Cl]2 used as homogeneous catalyst, all hybrid catalysts exhibited comparable or even higher catalytic activity in the polymerization of phenylacetylene and 4-ethynyl-N-{4-[(trimethylsilyl)ethynyl]benzylidene}aniline. The initial polymerization rate increased with increasing accessibility of mesoporous surface o
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Balcar, Hynek, Tushar Shinde, Naděžda Žilková, and Zdeněk Bastl. "Hoveyda–Grubbs type metathesis catalyst immobilized on mesoporous molecular sieves MCM-41 and SBA-15." Beilstein Journal of Organic Chemistry 7 (January 6, 2011): 22–28. http://dx.doi.org/10.3762/bjoc.7.4.

Texto completo
Resumen
A commercially available Hoveyda–Grubbs type catalyst (RC303 Zhannan Pharma) was immobilized on mesoporous molecular sieves MCM-41 and on SBA-15 by direct interaction with the sieve wall surface. The immobilized catalysts exhibited high activity and nearly 100% selectivity in several types of alkene metathesis reactions. Ru leaching was found to depend on the substrate and solvent used (the lowest leaching was found for ring-closing metathesis of 1,7-octadiene in cyclohexane – 0.04% of catalyst Ru content). Results of XPS, UV–vis and NMR spectroscopy showed that at least 76% of the Ru content
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Jung, Hun, Kwang Deog Jung, Oh Shim Joo, and Sun Jin Kim. "Synthesis and Catalytic Application of Mesoporous Molecular Sieves MCM-41 Containing Niobium and Tantalum." Solid State Phenomena 124-126 (June 2007): 1761–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1761.

Texto completo
Resumen
Niobium- and tantalum-containing mesoporous molecular sieves MCM-41 have been synthesized, and applied as a catalyst for vapor phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam. NbMCM-41 catalyst exhibited high catalytic performance in the vapor phase Beckmann rearrangement of cyclohexanone oxime. The oxime conversions were almost 100% and the lactam selectivities were around 80%. The lactam selectivities of NbMCM-41 catalyst were higher than those of AlMCM-41 catalyst. However, TaMCM-41 catalyst exhibited lower catalytic performance than AlMCM-41 catalyst, and it was fast d
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Liu, Wen Ming, Jia Jia Cao, Chun Ling Fan, and Zhao Ping Chen. "Synthesis and Catalytic Property of V-MCM-41 Mesoporous Molecular Sieves by Atrane Route." Advanced Materials Research 284-286 (July 2011): 936–39. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.936.

Texto completo
Resumen
V-MCM-41 molecular sieve with high vanadium content has been prepared by the atrane route. Gas phase partial oxidation of toluene to benzaldehyde on the V-MCM-41 molecular sieves catalysts was studied. The structure and characteristic of catalyst were characterized by means of XRD, UV-vis and so on. The experimental results showed that the vanadium content in the framework related to mole ratio of silica to vanadium. The vanadium content in the framework was the highest, when the mole ratio of Si to V was 30. And the vanadium in the framework may be active centers of catalytic oxidation of tol
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

RAVAT, VILAS, and PREETI AGHALAYAM. "PALLDIUM SUPPORTED MCM-41 MESOPOROUS MOLECULAR SIEVES: SYNTHESIS, CHARACTERIZATION AND CATALYTIC TEST FOR THE REDUCTION OF NO BY CO." International Journal of Nanoscience 10, no. 04n05 (2011): 1051–56. http://dx.doi.org/10.1142/s0219581x11008563.

Texto completo
Resumen
Palladium supported MCM-41 molecular sieves with Si/Pd (molar) ratios of 400, 200, 100 and 50 were synthesized by hydrothermal method. All catalysts characterized by various analytical and spectroscopic techniques, viz, XRD, N2 sorption, TEM, DRUV-VIS, Raman. XRD at low angle and high angle studies suggest that the substitution of palladium and presence of palladium oxide phase in the silicate tetrahedral framework structure of MCM-41. TEM investigations confirm the highly ordered cubic structure with irregular distribution of palladium nanoparticles on surface PdMCM-41 . DRUV-VIS and Raman sp
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Bejblová, Martina, Josef Vlk, Dana Procházková, Helena Šiklová, and Jiří Čejka. "The Effect of Type of Acid Sites in Molecular Sieves on Activity and Selectivity in Acylation Reactions." Collection of Czechoslovak Chemical Communications 72, no. 5-6 (2007): 728–46. http://dx.doi.org/10.1135/cccc20070728.

Texto completo
Resumen
The role of the type of acid site (Broensted vs. Lewis) on the activity and selectivity of molecular sieve catalysts was investigated in ferrocene and toluene acylation. H-, Zn-, Fe-, Al- and La-forms of zeolite Beta, USY and mesoporous molecular sieves (Al)MCM-41, (Al)SBA-15 were tested. It was observed that addition of metal cations acting as Lewis acid sites can increase the acidity of various molecular sieve catalysts. No general relationship between the type of cation and conversion of individual substrate was found. While the highest activity in ferrocene acylation was observed after add
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Vetrivel, S., and A. Pandurangan. "Aerial oxidation of p-isopropyltoluene over manganese containing mesoporous MCM-41 and Al-MCM-41 molecular sieves." Journal of Molecular Catalysis A: Chemical 246, no. 1-2 (2006): 223–30. http://dx.doi.org/10.1016/j.molcata.2005.10.024.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Liu, Zai Man, Pei Pei Deng, and Bai Yu Li. "Alkylation of p-Cresol with Isobutylene Catalyzed by Heteropoly Acid Supported on MCM-41 Catalyst." Advanced Materials Research 356-360 (October 2011): 2803–7. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.2803.

Texto completo
Resumen
The phosphorus tungsten(PW) heteropoly acids were immobilized on the mesoporous molecular sieves(MCM-41) by wet impregnation. The prepared catalysts were characterized by X-ray powder diffraction, TG and DTA,FTIR. The alkylation of p-cresol with isobutylene was carried out over the PW /MCM-41 catalysts. The influences of various reaction parameters such as reaction temperature, time, PW loading, and catalysts amount on the conversion of p-cresol and the products selectivity were also investigated. Under the optimized reaction conditions of 90 °C,PW loading of 10%, catalyst amount of 1.5%, p-cr
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Palani, A., and A. Pandurangan. "Esterification of terephthalic acid with methanol over mesoporous Al-MCM-41 molecular sieves." Journal of Molecular Catalysis A: Chemical 245, no. 1-2 (2006): 101–5. http://dx.doi.org/10.1016/j.molcata.2005.09.028.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
11

Zhang, Zongwei, Qingfa Wang, and Xiangwen Zhang. "Hydroconversion of Waste Cooking Oil into Bio-Jet Fuel over NiMo/SBUY-MCM-41." Catalysts 9, no. 5 (2019): 466. http://dx.doi.org/10.3390/catal9050466.

Texto completo
Resumen
A hierarchical SBUY-MCM-41 catalyst was prepared by sacrificing USY (a microporous molecular sieve) to synthesize the MCM-41 zeolite via a hydrothermal method. The hydroconversion of waste cooking oil into hydrocarbon fuel over a NiMo/SBUY-MCM-41 catalyst was investigated. The micropores of the Y building units were inherited by the SBUY-MCM-41 zeolite, in which a special hierarchical structure was formed and the accessibility of reactants to the micropore active sites was improved. The hierarchical SBUY-MCM-41 showed high acidity and hydrothermal stability. Compared with mesoporous Al-MCM-41
Los estilos APA, Harvard, Vancouver, ISO, etc.
12

Cantín, Ángel, M. Victoria Gomez, and Antonio de la Hoz. "Diels–Alder reactions in confined spaces: the influence of catalyst structure and the nature of active sites for the retro-Diels–Alder reaction." Beilstein Journal of Organic Chemistry 12 (October 13, 2016): 2181–88. http://dx.doi.org/10.3762/bjoc.12.208.

Texto completo
Resumen
Diels–Alder cycloaddition between cyclopentadiene and p-benzoquinone has been studied in the confined space of a pure silica zeolite Beta and the impact on reaction rate due to the concentration effect within the pore and diffusion limitations are discussed. Introduction of Lewis or Brønsted acid sites on the walls of the zeolite strongly increases the reaction rate. However, contrary to what occurs with mesoporous molecular sieves (MCM-41), Beta zeolite does not catalyse the retro-Diels–Alder reaction, resulting in a highly selective catalyst for the cycloaddition reaction.
Los estilos APA, Harvard, Vancouver, ISO, etc.
13

Reddy, Kondam Madhusudan, and Chunshan Song. "Synthesis of mesoporous molecular sieves: influence of aluminum source on Al incorporation in MCM-41." Catalysis Letters 36, no. 1-2 (1996): 103–9. http://dx.doi.org/10.1007/bf00807213.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
14

Selvaraj, M., A. Pandurangan, K. S. Seshadri, P. K. Sinha, and K. B. Lal. "Synthesis, characterization and catalytic application of MCM-41 mesoporous molecular sieves containing Zn and Al." Applied Catalysis A: General 242, no. 2 (2003): 347–64. http://dx.doi.org/10.1016/s0926-860x(02)00527-6.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
15

Udayakumar, S., A. Pandurangan, and P. K. Sinha. "Vapour phase reaction of ethylbenzene with isopropyl acetate over mesoporous Al-MCM-41 molecular sieves." Journal of Molecular Catalysis A: Chemical 216, no. 1 (2004): 121–30. http://dx.doi.org/10.1016/j.molcata.2004.02.014.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
16

Palani, A., M. Palanichamy, and A. Pandurangan. "Vapour phase esterification of butyric acid with 1-pentanol over Al-MCM-41 mesoporous molecular sieves." Catalysis Letters 115, no. 1-2 (2007): 40–45. http://dx.doi.org/10.1007/s10562-007-9073-1.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
17

Rajasekar, K., K. Balkis Ameen, and A. Pandurangan. "Selective gas phase tert-butylation of 4-hydroxyanisole over mesoporous PWA/Al-MCM-41 molecular sieves." Catalysis Communications 10, no. 2 (2008): 150–55. http://dx.doi.org/10.1016/j.catcom.2008.08.009.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
18

Udayakumar, S., A. Pandurangan, and P. K. Sinha. "Vapor phase reaction of tert-butylbenzene with isopropyl acetate over mesoporous Al-MCM-41 molecular sieves." Journal of Molecular Catalysis A: Chemical 216, no. 1 (2004): 75–82. http://dx.doi.org/10.1016/j.molcata.2004.02.011.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
19

Yang, Ralph T., Thomas J. Pinnavaia, Weibin Li, and Wenzhong Zhang. "Fe3+Exchanged Mesoporous Al-HMS and Al-MCM-41 Molecular Sieves for Selective Catalytic Reduction of NO with NH3." Journal of Catalysis 172, no. 2 (1997): 488–93. http://dx.doi.org/10.1006/jcat.1997.1899.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
20

Kothe, Vinícius, Helton José Alves, Marcos Henrique Luciano Silveira, and Luiz Pereira. "Synthesis, characterization and application of [CTA+]MCM-41 in the catalytic conversion of soybean oil to fatty acid methyl esters." JOURNAL OF ADVANCES IN CHEMISTRY 12, no. 6 (2016): 4117–26. http://dx.doi.org/10.24297/jac.v12i6.4348.

Texto completo
Resumen
The transesterification of vegetable oil and/or animal fats in homogeneous alkaline medium is still the most widely used method for the production of biodiesel. However, this process requires raw materials with low acidity and moisture content to prevent undesirable side reactions such as saponification, which leads to emulsification and promotes losses in the reaction yield. Many solid compounds can be used in catalytic processes to reduce these limitations. Heterogeneous catalysts allow easy separation of the reaction media and have the possibility of reuse in several cycles. In this work, [
Los estilos APA, Harvard, Vancouver, ISO, etc.
21

Kugita, Tsuyoshi, Suman K. Jana, Tomo Owada, Naoki Hashimoto, Makoto Onaka та Seitaro Namba. "Mesoporous Al-containing MCM-41 molecular sieves: highly active catalysts for Diels–Alder reaction of cyclopentadiene with α,β-unsaturated aldehydes". Applied Catalysis A: General 245, № 2 (2003): 353–62. http://dx.doi.org/10.1016/s0926-860x(02)00658-0.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
22

Balcar, Hynek, Jiřı́ Čejka, Jan Sedláček, et al. "[Rh(cod)Cl]2 complex immobilized on mesoporous molecular sieves MCM-41-a new hybrid catalyst for polymerization of phenylacetylene." Journal of Molecular Catalysis A: Chemical 203, no. 1-2 (2003): 287–98. http://dx.doi.org/10.1016/s1381-1169(03)00379-0.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
23

Selvaraj, M., S. H. Jeon, J. Han, P. K. Sinha, and T. G. Lee. "A novel route to produce 4-t-butyltoluene by t-butylation of toluene with t-butylalcohol over mesoporous Al-MCM-41 molecular sieves." Applied Catalysis A: General 286, no. 1 (2005): 44–51. http://dx.doi.org/10.1016/j.apcata.2005.02.027.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
24

Ajaikumar, S., and A. Pandurangan. "Efficient synthesis of quinoxaline derivatives over ZrO2/MxOy (M=Al, Ga, In and La) mixed metal oxides supported on MCM-41 mesoporous molecular sieves." Applied Catalysis A: General 357, no. 2 (2009): 184–92. http://dx.doi.org/10.1016/j.apcata.2009.01.021.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
25

Ding, Xue, Xi Chang Yu, and Hai Xia Sun. "Preparation and Characterization of MCM-41 Mesoporous Silica Functionalized with Sulfonic Acid Groups." Advanced Materials Research 781-784 (September 2013): 215–18. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.215.

Texto completo
Resumen
Mesoporous molecular sieve MCM-41 was modified by using 3-mercaptopropyltriethoxysilane as a coupling agent and MCM-41 functionalized with sulfonic acid groups was prepared. The prepared product was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, nitrogen adsorption-desorption technique and temperature programmed desorption. The results showed that during the process of modification the frameworks of the molecular sieve were not destroyed, the channel has ordered property. SH group was successfully grafted to the surface of channels of the molecular sieve. The acid
Los estilos APA, Harvard, Vancouver, ISO, etc.
26

Zhang, Kaili, Danni Li, Ying Liu, and Shubin Wu. "Catalytic Transfer Hydrogenation of Biomass Derived 5-Hydroxymethylfurfural into 2,5-Dimethylfuran in a Methanol Medium." Journal of Biobased Materials and Bioenergy 14, no. 2 (2020): 220–26. http://dx.doi.org/10.1166/jbmb.2020.1953.

Texto completo
Resumen
The hydrogenation of HMF has been conducted in a methanol medium, which served as hydrogen donor and solvent. Without any additive, HMF was hydrogenated to 2,5-dimethylfuran (DMF) with complete conversion and selectivity (64%) using well-ordered mesoporous MCM-41 with high nickel content as catalyst at 190 °C in 5 h. Two kinds of mesoporous molecular sieve catalysts were prepared by impregnation and in-situ synthesis. Different reaction parameters such as the amount of Ni, reaction time and temperature were optimized to achieve the highest catalytic activity. Moreover, the plausible reasons fo
Los estilos APA, Harvard, Vancouver, ISO, etc.
27

Santos, José Otávio Peroba Nascimento, Rafaela Pereira Roque de Miranda, Deivid Sousa Figueiroa, Carlos Eduardo Pereira, and Bianca Viana de Sousa. "Molecular Sieves (MCM-41, Al-MCM-41) Characterization Using Different Silica Sources." Materials Science Forum 727-728 (August 2012): 1228–32. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.1228.

Texto completo
Resumen
Research, synthesis and catalytic application of molecular sieves areas has been constituting a large field of development and prominence in recent decades, due to the large potential of these materials in respect of theirs catalytic properties. The need for costs reduction in the production of these structures, has encouraged the search for new sources of reactants which could provide an equal application of these sieves together with low costs. This work has the aim to obtain and to characterize molecular sieves type MCM-41 and Al-MCM-41 using new routes of synthesis. The molecular sieves MC
Los estilos APA, Harvard, Vancouver, ISO, etc.
28

Chen, Chang-Lin, Soofin Cheng, Hong-Ping Lin, She-Tin Wong, and Chung-Yuan Mou. "Sulfated zirconia catalyst supported on MCM-41 mesoporous molecular sieve." Applied Catalysis A: General 215, no. 1-2 (2001): 21–30. http://dx.doi.org/10.1016/s0926-860x(01)00504-x.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
29

Konovalova, Tatyana A., Yunlong Gao, Rainer Schad, Lowell D. Kispert, Charles A. Saylor, and Louis-Claude Brunel. "Photooxidation of Carotenoids in Mesoporous MCM-41, Ni-MCM-41 and Al-MCM-41 Molecular Sieves." Journal of Physical Chemistry B 105, no. 31 (2001): 7459–64. http://dx.doi.org/10.1021/jp0108519.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
30

Rajasekar, K., and A. Pandurangan. "Vapor-phase tert-butylation of p-hydroxytoluene over Al-MCM-41 and PWA supported Al-MCM-41 mesoporous molecular sieve catalysts." Catalysis Communications 8, no. 4 (2007): 635–43. http://dx.doi.org/10.1016/j.catcom.2006.05.037.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
31

Jana, Suman K., Tsuyoshi Kugita, and Seitaro Namba. "Bisphenol F Synthesis Over Mesoporous Aluminosilicate MCM-41 Molecular Sieves." Catalysis Letters 90, no. 3/4 (2003): 143–47. http://dx.doi.org/10.1023/b:catl.0000004108.50125.3f.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
32

Mermer, Nevin Karamahmut, and Muge Sari Yilmaz. "SYNTHESIS OF FUNCTIONALIZED MCM-41 MESOPOROUS SILICA." CBU International Conference Proceedings 5 (September 24, 2017): 1164–68. http://dx.doi.org/10.12955/cbup.v5.1089.

Texto completo
Resumen
: The invention of mesoporous materials is of significant interest to many scientists worldwide. The Mobil Crystalline Materials No 41 (MCM-41) is a well-known mesoporous molecular sieve that was discovered in 1992 by a scientist at the Mobil Oil Corporation. The MCM-41 is widely used in catalysis, ion exchange, drug delivery, optics, gas sensing, and sorption. In this study, the surface of a mesoporous silica MCM-41, synthesized from pure silica, is functionalized with a methyl group by grafting. The synthesized and functionalized samples are characterized by X-ray powder diffractometer (XRD)
Los estilos APA, Harvard, Vancouver, ISO, etc.
33

Bai-Jun, LIU, MENG Qing-Lei, WANG Hui, and MENG Qing-Min. "Synthesis and Characterization of Al MCM-41 Mesoporous Molecular Sieves." Acta Physico-Chimica Sinica 26, no. 12 (2010): 3257–62. http://dx.doi.org/10.3866/pku.whxb20101140.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
34

Silva, Monica, Maria E. Azenha, Mariette M. Pereira, et al. "Immobilization of 5,10,15,20-tetrakis-(2-fluorophenyl)porphyrin into MCM-41 and NaY: Routes toward photodegradation of pesticides." Pure and Applied Chemistry 81, no. 11 (2009): 2025–33. http://dx.doi.org/10.1351/pac-con-08-12-04.

Texto completo
Resumen
NaY zeolite and MCM-41 mesoporous molecular sieve were used as supports for immobilization of 5,10,15,20-tetrakis-(2-fluorophenyl)porphyrin (TFPP) using adsorption and ship-in-the-bottle routes involving the nitrobenzene method. The materials obtained were characterized by thermogravimetry/differential thermal analysis (TG/DTA), nitrogen adsorption, UV–vis absorption, diffuse reflectance (DRS), and luminescence spectroscopy. Although the porphyrin could easily be synthesized inside MCM-41 pores using the ship-in-the-bottle route, no significant porphyrin was formed in the smaller supercages of
Los estilos APA, Harvard, Vancouver, ISO, etc.
35

Li, Lu, Shitao Yu, Fusheng Liu, Jinzong Yang, and Shufen Zhaug. "Reactions of turpentine using Zr-MCM-41 family mesoporous molecular sieves." Catalysis Letters 100, no. 3-4 (2005): 227–33. http://dx.doi.org/10.1007/s10562-005-3460-2.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
36

Zhang, Zhaorong. "Synthesis of highly active tungsten-containing MCM-41 mesoporous molecular sieve catalyst." Chemical Communications, no. 2 (1998): 241–42. http://dx.doi.org/10.1039/a706719d.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
37

Chen, L. F., J. A. Wang, L. E. Noreña, et al. "Synthesis and physicochemical properties of Zr-MCM-41 mesoporous molecular sieves and Pt/H3PW12O40/Zr-MCM-41 catalysts." Journal of Solid State Chemistry 180, no. 10 (2007): 2958–72. http://dx.doi.org/10.1016/j.jssc.2007.08.023.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
38

Selvaraj, M., P. K. Sinha, and A. Pandurangan. "Synthesis of dypnone using SO42−/Al-MCM-41 mesoporous molecular sieves." Microporous and Mesoporous Materials 70, no. 1-3 (2004): 81–91. http://dx.doi.org/10.1016/j.micromeso.2004.02.013.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
39

Palani, A., and A. Pandurangan. "Esterification of acetic acid over mesoporous Al-MCM-41 molecular sieves." Journal of Molecular Catalysis A: Chemical 226, no. 1 (2005): 129–34. http://dx.doi.org/10.1016/j.molcata.2004.09.017.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
40

Umamaheswari, V. "Isopropylation of m-Cresol over Mesoporous Al–MCM-41 Molecular Sieves." Journal of Catalysis 210, no. 2 (2002): 367–74. http://dx.doi.org/10.1006/jcat.2002.3709.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
41

Liu, Sa, Jian Wei Guo, Chu Fen Yang, Long Huan Li, and Yi Hua Cui. "Synthesis of Al-Containing Mesoporous Molecular Sieves and their Catalytic Performance to Isomerization Reaction of Endo-Tetrahydrodicyclo-Pentadiene." Advanced Materials Research 233-235 (May 2011): 234–37. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.234.

Texto completo
Resumen
Al-containing mesoporous molecular sieves(Al-MCM-41) were synthesized at ambient temperature. The structures of samples were characterized by XRD, N2-adsorption/desorption isotherms and FT-IR, etc. The evaluation results showed that Al-MCM-41 had higher catalytic activity for isomerization conversion of endo-tetrahydrodicyclo-pentadiene (endo-TCD) into exo-tetrahydrodicyclo-pentadiene (exo-TCD) and adamantane (AdH). Loading inorganic acid on the surface of Al-MCM-41 led increase of its catalytic activity and the yield of adamantane.
Los estilos APA, Harvard, Vancouver, ISO, etc.
42

Chaudhari, K., Rajaram Bal, A. J. Chandwadkar, and S. Sivasanker. "Beckmann rearrangement of cyclohexanone oxime over mesoporous Si-MCM-41 and Al-MCM-41 molecular sieves." Journal of Molecular Catalysis A: Chemical 177, no. 2 (2002): 247–53. http://dx.doi.org/10.1016/s1381-1169(01)00270-9.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
43

Kozhevnikov, I. V., A. Sinnema, R. J. J. Jansen, K. Pamin, and H. van Bekkum. "New acid catalyst comprising heteropoly acid on a mesoporous molecular sieve MCM-41." Catalysis Letters 30, no. 1-4 (1994): 241–52. http://dx.doi.org/10.1007/bf00813690.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
44

Liu, Dapeng, Shuangquan Hu, Raymond Lau, Armando Borgna, Gary L. Haller, and Yanhui Yang. "Hydroconversion of n-heptane over Pt/Al-MCM-41 mesoporous molecular sieves." Chemical Engineering Journal 151, no. 1-3 (2009): 308–18. http://dx.doi.org/10.1016/j.cej.2009.03.052.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
45

Li, Dong Mei, Zhong Zhen Tian, and Pei Feng Wei. "Improve the Optical Properties of Rhodamine B by Encapsulating in Al-MCM-41." Advanced Materials Research 306-307 (August 2011): 792–95. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.792.

Texto completo
Resumen
M-MCM-41 (M = Al, Cu, Cr, Ti) were synthesized by hydrothermal method and characterized by XRD. Rhodamine B molecules were encapsulated into these mesoporous molecular sieves by impregnation method. Steady fluorescence measurements indicated that doping of Al ions into MCM-41 enhanced largely the fluorescence intensities, but more Al decreased the fluorescence intensities resulting from the formation of Al2O3.
Los estilos APA, Harvard, Vancouver, ISO, etc.
46

Käldström, M., N. Kumar, T. Heikkilä, M. Tiitta, T. Salmi, and D. Yu Murzin. "Transformation of levoglucosan over H-MCM-22 zeolite and H-MCM-41 mesoporous molecular sieve catalysts." Biomass and Bioenergy 35, no. 5 (2011): 1967–76. http://dx.doi.org/10.1016/j.biombioe.2011.01.046.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
47

Reddy, Kondam Madhusudan, Boli Wei, and Chunshan Song. "Mesoporous molecular sieve MCM-41 supported Co–Mo catalyst for hydrodesulfurization of petroleum resids." Catalysis Today 43, no. 3-4 (1998): 261–72. http://dx.doi.org/10.1016/s0920-5861(98)00155-2.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
48

Zhou, Ren-Xian, Yue-Juan Wang, and Xiao-Ming Zheng. "A new solid acid catalyst grafting BF3�Et2O on mesoporous molecular sieve MCM-41." Catalysis Letters 100, no. 3-4 (2005): 201–3. http://dx.doi.org/10.1007/s10562-004-3456-3.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
49

Mokaya, Robert, William Jones, Zhaohua Luan, Maria D. Alba, and Jacek Klinowski. "Acidity and catalytic activity of the mesoporous aluminosilicate molecular sieve MCM-41." Catalysis Letters 37, no. 1-2 (1996): 113–20. http://dx.doi.org/10.1007/bf00813528.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
50

Selvaraj, M., K. Lee, K. S. Yoo, and T. G. Lee. "Synthesis of 2-acetyl-6-methoxynaphthalene using mesoporous /Al-MCM-41 molecular sieves." Microporous and Mesoporous Materials 81, no. 1-3 (2005): 343–55. http://dx.doi.org/10.1016/j.micromeso.2005.02.017.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!

Pasar a la bibliografía