Relevant bibliographies by topics / Al-MCM-41 mesoporous molecular sieves

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Academic literature on the topic 'Al-MCM-41 mesoporous molecular sieves'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Al-MCM-41 mesoporous molecular sieves"

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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.

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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
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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.

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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
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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.

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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.

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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.
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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.

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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.

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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.
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Sayari, Abdelhamid, Chistophe Danumah, and Igor L. Moudrakovski. "Boron-Modified MCM-41 Mesoporous Molecular Sieves." Chemistry of Materials 7, no. 5 (1995): 813–15. http://dx.doi.org/10.1021/cm00053a001.

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Wang, Li Qin, Yang Han, Xiu Jun Fu, et al. "Synthesis and Characterization of MCM-41 Molecular Sieves Nanoparticals." Advanced Materials Research 662 (February 2013): 214–17. http://dx.doi.org/10.4028/www.scientific.net/amr.662.214.

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Nanoparticals of MCM-41 molecular sieves were synthesized at near room temperature with cetyltrimethylammonium bromide (CTAB) as template agent. The prepared samples were characterized by the means of scanning electron microscopy (SEM), X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), N2 adsorption tests, thermogravimetric and differential thermal analysis (TG-DTA). The results suggested that morphology of MCM-41 molecular sieves samples with high crystallinity was almost uniform spherical, and the particles size was almost less than 100 nm. The adsorption-desor
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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.

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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.

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Dissertations / Theses on the topic "Al-MCM-41 mesoporous molecular sieves"

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MEDEIROS, Cláudia Dourado. "Desenvolvimento de Peneiras Moleculares MCM-41 E Al-MCM-41, via processo hidrotermal assistido por micro-ondas." Universidade Federal de Campina Grande, 2014. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/527.

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Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-04-30T16:37:00Z No. of bitstreams: 1 CLÁUDIA DOURADO MEDEIROS - DISSERTAÇÃO PPGEQ 2014..pdf: 1542895 bytes, checksum: 5a74f0ba9e6514c2859c363f528e0b6f (MD5)<br>Made available in DSpace on 2018-04-30T16:37:00Z (GMT). No. of bitstreams: 1 CLÁUDIA DOURADO MEDEIROS - DISSERTAÇÃO PPGEQ 2014..pdf: 1542895 bytes, checksum: 5a74f0ba9e6514c2859c363f528e0b6f (MD5) Previous issue date: 2014-04-02<br>Capes<br>As peneiras moleculares mesoporosas possuem um arranjo hexagonal de mesoporos com diâmetros de poros que variam de 2 a 10 nm
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Nalbant, Asli. "Synthesis And Characterization Of Cu-mcm-41 And Ni-mcm-41 Type Catalytic Materials." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12605788/index.pdf.

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Discovery of mesoporous materials by Mobil researchers in 1992 opened a new field in catalytic applications. The materials designated as M41S family are MCM-41 with one-dimensional hexagonal structure, MCM-48 with three-dimensional cubic structure and MCM-51 with unstable lamellar structure. This family of materials have high surface areas up to 1500 m2/g, narrow pore size distributions with pore sizes varying from 20 to 100 &Aring<br>. These materials can be activated by incorporation of metals or active compounds into their structures. In this study, copper and nickel incorporated MCM-41 typ
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Yiu, Humphrey Hak Ping. "The application of MCM-41 type mesoporous molecular sieves as heterogeneous acid catalysts and catalyst supports." Thesis, University of Huddersfield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285629.

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Two types of mesoporous molecular sieves, MCM-41 and MMS, were prepared, fully characterised and tested as solid acid catalysts and catalyst support materials. Three different methods for characterising the surface acidity of these solid acids were examined and compared. These methods were 1. Fourier Transform infrared (FTIR) spectroscopy of adsorbed pyridine, 2. Pulsed ammonia adsorption using a combination of thermogravimetry and differential scanning calorimetry (TG/DSC), and 3. Temperature-programmed desorption of amines. The acidity results of these molecular sieves were compared with zeo
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Oliveira, Thiago Gallo de. "Desenvolvimento de peneiras moleculares mesoporosas do tipo MCM-41 e MCM-48 impregnadas com aminas para utilização na adsorção de CO2." Universidade Federal de Sergipe, 2012. https://ri.ufs.br/handle/riufs/6040.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The significant increase of carbon dioxide emissions in the atmosphere comes intensifying the global warming. The search for energetic source that turn emission down is of great importance, as well as the use of complementary actions like dioxide carbon capture process of the main emissions sources. From among some processes already very well-known industrially highlights chemical absorption with alkanolamine, which shows some disadvantages in being costly and generate waste derived from recovery. The use gas-solid selective in c
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Sun, Bo. "Understanding and Modifying TiO2 for Aqueous Organic Photodegradation." Cincinnati, Ohio : University of Cincinnati, 2005. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin112361662.

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Thesis (Ph. D.)--University of Cincinnati, 2005.<br>Title from electronic thesis title page (viewed Apr. 12, 2006). Includes abstract. Keywords: band structure; charge separation; 4-chlorophenol; CrO3; deactivation; Degussa P25; Electrospinning; environment decontamination.; Fibers; MCM-41; MCM-48; Mesoporous Molecular Sieves; oxidation state; photocatalysis; platinum; quantum efficiency; reactivation; reduction; SBA-15; surface modification; synergism; synergy; TiO2; titania; Titanium Dioxide; total carbon removal.; total organic carbon; TPR; Transition metals; visible light; UV-light; UV-Vis
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Costa, Maria Jos? Fonseca. "S?ntese e caracteriza??o de materiais nanoporosos para pir?lise catal?tica de ?leos pesados." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17609.

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Made available in DSpace on 2014-12-17T15:41:45Z (GMT). No. of bitstreams: 1 MariaJFCpdf.pdf: 4931245 bytes, checksum: 45a7ea893d17f478c73adf56787579aa (MD5) Previous issue date: 2008-12-22<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>The present work reports the study of nanoporous structures, aiming at their use in research directed to the current demand of the petroleum industry to value heavy oil. Initially, two ways were chosen for the synthesis of porous structures from the molecular sieves of type Si-MCM-41. In the first way, the structure MCM-41 is precursory for
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La, Salvia Nathália 1985. "Síntese e caracterização de MCM-41 impregnada com magnésio e cromo e suas propriedades catalíticas para reações de conversão de etanol." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266085.

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Orientador: Gustavo Paim Valença<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-24T23:01:25Z (GMT). No. of bitstreams: 1 LaSalvia_Nathalia_D.pdf: 7860896 bytes, checksum: 356f0e957d83d2daaba9cb36b26a4056 (MD5) Previous issue date: 2014<br>Resumo: Peneiras moleculares do tipo MCM-41 foram sintetizadas com e sem alumínio estrutural e impregnadas com 5% de magnésio e 5 e 10% de cromo. As amostras foram então calcinadas e caracterizadas, e utilizadas na conversão catalítica de etanol. Esses materiais foram caracteri
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Barbosa, Marcela Nascimento. "S?ntese, caracteriza??o e aplica??o de MCM-41 funcionalizado com diisopropilamina no processo de adsor??o do di?xido de carbono." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17608.

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Made available in DSpace on 2014-12-17T15:41:45Z (GMT). No. of bitstreams: 1 MarcelaNBpdf.pdf: 2700913 bytes, checksum: 95100e939e95f8047d0ef3d50eb366ab (MD5) Previous issue date: 2009-08-12<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>Emissions of CO2 in the atmosphere have increased successively by various mechanisms caused by human action, especially as fossil fuel combustion and industrial chemical processes. This leads to the increase in average temperature in the atmosphere, which we call global warming. The search for new technologies to minimize environmental i
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Pereira, Francisco de Assis Rodrigues. "Síntese, caracterização e avaliação catalítica do aluminossilicato mesoestruturado AI-MCM-41 na transesterificação de óleos vegetais." Universidade Federal da Paraí­ba, 2010. http://tede.biblioteca.ufpb.br:8080/handle/tede/7165.

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Made available in DSpace on 2015-05-14T13:21:44Z (GMT). No. of bitstreams: 1 parte1.pdf: 1266396 bytes, checksum: a4c7a57bd0fd6230873b3e69c5c52c4f (MD5) Previous issue date: 2010-12-01<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Molecular sieves have been applied to the processing of triacylglycerols, to produce biofuels. In this context, the mesoporous catalyst Al-MCM-41 was proposed in this work as an alternative to acid heterogeneous transesterification of cottonseed oil with ethanol. This material was prepared using various Si/Al molar ratios (25, 50,
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Daniel, Christopher John. "The use of novel mesoporous molecular sieve MCM-41 for the sorption and separation of neutral and overbased sulphonate and phenate lubricant detergents." Thesis, De Montfort University, 2003. http://hdl.handle.net/2086/10765.

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An area of industry that exploits zeolites for separation purposes is that of the petroleum industry where zeolites are used in catalytic conversions as well as chromatographic separations of hydrocarbons. The development of large pore sized materials such as MCM-41 enables larger molecules to be separated by the process of size exclusion than by traditional zeolites. In this work, mesoporous materials were synthesised and characterised using powder x-ray diffraction and nitrogen surface studies and shown to have different pore sizes in the region of 2 nm to 6 nm. They were then compared to tr
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Book chapters on the topic "Al-MCM-41 mesoporous molecular sieves"

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Qiang, Liang Sheng, B. Liu, D. H. Fan, M. Ge, and Y. L. Yang. "Synthesis and Luminescence of Eu Complex Incorporated MCM-41 Mesoporous Molecular Sieves." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-30-2.307.

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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." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.1761.

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Nowak, I., B. Kilos, M. Ziolek, and J. C. Volta. "Structural and Textural Properties of MCM-41 Mesoporous Molecular Sieves Containing Nb, V, Mo — Alternative Catalysts for Hydrocarbons Oxidation." In NATO Science Series II: Mathematics, Physics and Chemistry. Springer Netherlands, 2005. http://dx.doi.org/10.1007/1-4020-3310-9_15.

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Franke, O., J. Rathouský, G. Schulz-Ekloff, and A. Zukal. "Synthesis of MCM-41 mesoporous molecular sieves." In Studies in Surface Science and Catalysis. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-2991(06)81767-2.

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Trejda, M., M. Daturi, J. C. Lavalley, I. Nowak, and M. Ziolek. "FTIR study of FE-doped MCM-41 mesoporous molecular sieves." In Recent Advances in the Science and Technology of Zeolites and Related Materials Part B, Proceedings of the 14th International Zeolite Conference. Elsevier, 2004. http://dx.doi.org/10.1016/s0167-2991(04)80669-4.

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Selvaraj, M., J. Kim, and T. G. Lee. "Synthesis of vitamin K3 over mesoporous Zr-MCM-41 molecular sieves." In Nanoporous Materials IV, Proceedings of the 4th International Symposium on Nanoporous Materials. Elsevier, 2005. http://dx.doi.org/10.1016/s0167-2991(05)80298-8.

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Sayari, Abdelhamid, Kondam Madhusudan Reddy, and Igor Moudrakovski. "Synthesis of V and Ti modified MCM-41 mesoporous molecular sieves." In Zeolite Science 1994: Recent Progress and Discussions - Supplementary Materials to the 10th International Zeolite Conference, Garmish-Partenkirchen, Germany, July 17-22, 1994. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-2991(06)81066-9.

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Kapoor, M. P., and Anuj Raj. "Epoxidation over niobium and titanium grafted MCM-41 and MCM-48 mesoporous molecular sieves." In Nanoporous Materials II, Proceedings of the 2nd Conference on Access in Nanoporous Materials. Elsevier, 2000. http://dx.doi.org/10.1016/s0167-2991(00)80230-x.

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Ziolek, M., A. Michalska, P. Decyk, I. Nowak, J. Michalik, and J. Sadlo. "Alkali-resistance of MCM-41 mesoporous molecular sieves containing various T (Al, Si, Nb) elements." In Studies in Surface Science and Catalysis. Elsevier, 2004. http://dx.doi.org/10.1016/s0167-2991(04)80834-6.

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Chen, Chih-Wei, and An-Nan Ko. "Mesoporous V-containing MCM-41 molecular sieves: synthesis, characterization and catalytic oxidation." In Nanotechnology in Mesostructured Materials, Proceedings of the 3rd International Materials Symposium. Elsevier, 2003. http://dx.doi.org/10.1016/s0167-2991(03)80459-7.

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Conference papers on the topic "Al-MCM-41 mesoporous molecular sieves"

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Jianfeng, Li, Liu Fusheng, Yu Shitao, Ge Xiaoping, and Zhai Xin. "Pyrolysis of Waste Polystyrene to Recover Styrene over Alkaline Mesoporous Molecular Sieve K2O-BaO/MCM-41." In 2010 International Conference on Digital Manufacturing and Automation (ICDMA 2010). IEEE, 2010. http://dx.doi.org/10.1109/icdma.2010.352.

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