نتایج جستجو برای: supported catalyst

تعداد نتایج: 234324  

Journal: :American Journal of Scientific and Industrial Research 2010

متن کامل
2014
Hiroshi Yoshida Ryohei Yamaoka Masahiko Arai

Hydrogen production through steam reforming of ethanol was investigated with conventional supported nickel catalysts and a Ni-containing smectite-derived catalyst. The former is initially active, but significant catalyst deactivation occurs during the reaction due to carbon deposition. Side reactions of the decomposition of CO and CH4 are the main reason for the catalyst deactivation, and these...

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Journal: :Microscopy and Microanalysis 2014

متن کامل
Journal: :Bulletin of the Chemical Society of Japan 1986

متن کامل
Journal: :Applied Catalysis A: General 1994

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Journal: :Journal of the Korea Academia-Industrial cooperation Society 2009

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Journal: :International Journal of Engineering & Technology 2019

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Journal: :Chiang Mai Journal of Science 2022

The stable of natural diatomite supported by potassium hydroxide (KOH) as catalysts were synthesized for biodiesel production. A heterogeneous base catalyst prepared impregnating KOH onto was also used to synthesize from palm oil. All samples have been thoroughly characterized Wavelength Dispersive X-ray Fluorescence (WDXRF), diffraction (XRD), N2 adsorption/desorption, Scanning electron micros...

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Journal: :Angewandte Chemie 2012
Teng Xue Shan Jiang Yongquan Qu Qiao Su Rui Cheng Sergey Dubin Chin-Yi Chiu Richard Kaner Yu Huang Xiangfeng Duan

Well supported: stable hemin-graphene conjugates formed by immobilization of monomeric hemin on graphene, showed excellent catalytic activity, more than 10 times better than that of the recently developed hemin-hydrogel system and 100 times better than that of unsupported hemin. The catalysts also showed excellent binding affinities and catalytic efficiencies approaching that of natural enzymes.

متن کامل
1995
P. F. Harris

The applications of supported metal catalysts vary widely, from selective hydrogenation in the fine chemicals industry to the control of vehicle emissions. Yet many basic questions about the structure, activity, and durability of these catalysts remain unanswered. For example, there is still much uncertainty about the mechanism of metal particle growth, or sintering, which is a major cause of c...

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