Results 81 to 90 of about 83,093,681 (218)
Esterification process catalyzed by ZSM-5 zeolite synthesized via modified hydrothermal method
MethodsX, 2018 A modified hydrothermal method for ZSM-5 synthesis was described. The crystals gave a typical pattern (2θ at around 22.5°, 24.0° and 29.8° corresponding to the major peaks of (501, 303 and 503 crystal surfaces)), which indicated that the subnanocrystals ...
Omar Ben Mya +3 more
doaj +1 more source
Synergistic effects of Ni and CeO2 on ZSM-5 for enhancement of CO2 methanation at low temperatures
Sustainable Chemistry for Climate ActionMethanation offers a potential option for converting CO2 to green synthetic fuels, providing a solution for reducing carbon emissions. Nickel-based catalysts, promoted with CeO2 and supported on zeolite ZSM-5, were synthesized for CO2 methanation using ...
Nguyen Xuan Hong Quan +7 more
doaj +1 more source
Olefin hydrogenation over zeolite H-ZSM-5.
Journal of The Japan Petroleum Institute, 1986 H-ZSM-5ゼオライトのオレフィン水素化能を調べるため, 1段目の反応管にZn-Cr系メタノール合成触媒, 2段目の反応管にH-ZSM-5 ゼオライトを充てんした2段反応装置を用いて, メタノールを経由する合成ガスからの炭化水素合成を検討した。1段目の反応圧を40kg/cm2とし, 2段目の反応圧を5～45kg/cm2と変化させたときの結果をFig. 1に示す。2段目の反応圧が20kg/cm2以上では, エタン, プロパンは生成したが, エチレン, プロピレンは全く生成しなかった。このことは, これらパラフィンがH-ZSM-5ゼオライト上で水素化あるいは水素移行反応により生成したことを示唆している。この違いを明らかにするためC2H4-H2, C2H4-Heの2種類の混合ガスをH-ZSM ...
Sano, Tsuneji +5 more
openaire +3 more sources
Formation and characterization of inorganic membranes from zeolite-silica microcomposites [PDF]
, 1988 Small crystals of zeolites (500-1000 nm) with two- and three-dimensional channel systems (faujasite and ZSM-5 structures) were embedded in amorphous thin films derived from TEOS hydrolyzed in alcoholic solution.
Brinker, C. Jeffrey +7 more
core +1 more source
Synthesis of ZSM-23/ZSM-22 intergrowth zeolite with a novel dual-template strategy
, 2009 ZSM-23/ZSM-22 intergrowth zeolite with fixed proportion of 60%ZSM-23/40%ZSM-22 has been synthesized with a novel dual-template strategy. The products were characterized by X-ray diffraction and scanning electron microscopy. Dimethylamine and diethylamine
Ma, Huaijun +18 more
core +1 more source
Synthesis of Dimethyl Terephthalate from Terephthalic Acid Esterification over the Zeolite Catalysts
InorganicsThe esterification of terephthalic acid (PTA) with methanol to dimethyl terephthalate (DMT) was investigated using commercially available zeolite catalysts as the eco-friendly solid acids. Six typical zeolites (ZSM-5-25, ZSM-5-50, ZSM-5-100, ZSM-35, MOR,
Ningyu Jia +4 more
doaj +1 more source
Green Processing and Synthesis, 2012 This paper describes the preparation of a ZSM-5 zeolite layer onto conventional Si wafers and Si micromonoliths, by using microwave-assisted seeded hydrothermal synthesis.
Marin Ingrid +6 more
doaj +1 more source
ZSM-5 catalyzed one pot three-component synthesis of 5-substituted-1H-tetrazoles from aldehyde
, 2019 In this paper, we report one-pot three-component synthesis of 5-substituted-1H-tetrazoles from aldehyde using zeolite-based heterogeneous catalyst (ZSM-5). Wide functional group tolerance with high chemical yield has been achieved.
Shrikant M. Ghodse (4732206) +2 more
core +1 more source
Photo-Catalytic Activity of ZnO Supported on H-ZSM-5 Zeolite to Reduce Cr(VI) from Aqueous Solutions [PDF]
International Archives of Health Sciences, 2015 Aims The application of photocatalytic processes to remove heavy metals in aqueous solutions and industrial wastewater are regarded as extremely effective, clean and without producing waste methods.
Haghighi M. MSc, +4 more
doaj
, 2006 Since the commercialization of ethylbenzene production via alkylation of benzene with the dilute ethene in FCC off-gas over a ZSM-5/ZSM-11 co-crystallized zeolite catalyst in China, the catalyst has been regenerated several times and showed good ...
Zhai, YC +5 more
core +1 more source