Results 31 to 40 of about 24,483 (311)

Chiral pyridyl phosphinite catalysts and the development of structure selectivity relationships in the asymmetric hydrogenation of trisubstituted alkenes [PDF]

, 2010
The current trend in developing asymmetric catalysts is towards creating specialized molecules with tailored functions for increased selectivity in classes of substrates rather than general catalysts capable of broad application.
Woodmansee, David Harrison
core   +1 more source

Surface Molecule Manipulated Pt/TiO2 Catalysts for Selective Hydrogenation of Cinnamaldehyde

, 2021
Surface states—the electronic states emerging as a solid material terminates at a surface—are usually vulnerable to contaminations and defects. This fundamental limitation has prohibited systematic studies of the potential role of surface states in ...
Meng, Ding, Ran, Tao, Bing-Qian, Shan, Qing-Song, Xue, Jin-Gang, Jiang, Kun, Zhang, Hao-Di, Sun, Wu, Peng   +7 more
core   +1 more source

Catalysts for selective hydrogenation of acetylene: A review

Materials Today Catalysis, 2023
Ethylene is a crucial industrial feedstock in the petrochemical sector. However, the presence of a small amount of acetylene impurities in ethylene products will directly affect the next application of ethylene.
Kefeng Xie, Kai Xu, Mingqiang Liu, Xiaohong Song, Shengyuan Xu, Huayan Si   +5 more
doaj   +1 more source

Identification of Copper as an Ideal Catalyst for Electrochemical Alkyne Semi-hydrogenation

, 2022
Selective removal of ∼1% acetylene impurity from ethylene is an essential process to prevent the poisoning of the Ziegler–Natta catalyst in polyethylene production.
Cheng Cai (4684924), Tao Wang, Tao Wang (12008), Zhe Chen, Cheng Cai, Zhe Chen (196097)   +5 more
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Effects of TiO2 structure and Co addition as a second metal on Ru-based catalysts supported on TiO2 for selective hydrogenation of furfural to FA

Scientific Reports, 2021
The TiO2 supported Ru-based catalysts were prepared with 1.5 wt% Ru and 0–0.8 wt% Co on various TiO2 (anatase, rutile, P-25, and sol–gel TiO2) and studied in the liquid-phase selective hydrogenation of furfural to furfuryl alcohol (FA) under mild ...
Weerachon Tolek, Natdanai Nanthasanti, Boontida Pongthawornsakun, Piyasan Praserthdam, Joongjai Panpranot   +4 more
doaj   +1 more source

Using Graphene Encapsulated Ni and Pd Catalysts with Solvent Effect to Achieve Highly Chemo-Selective Hydrogenation of 4-Nitrostyrene to Different Products

, 2021
Chemo-selective hydrogenation of challenging nitrostyrene to the corresponding product of vinylaniline, ethylbenzenamine, and ethylnitrobenzene separately in high yield is difficult since there exists competitive activation of the C=C double bond and the
Jianguo, Liu, Longlong, Ma, Jiangmin, Sun, Shanshan, Lin   +3 more
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Hydrogenation of Biomass-Derived Levulinic Acid to Gamma- Valerolactone Using Polymer-Based Metal-Containing Catalysts

Chemical Engineering Transactions, 2017
Nowadays the development of effective catalytic systems of selective hydrogenation of levulinic acid (LA) to gamma-valerolactone (GVL) is of high importance.
L.Z. Nikoshvili, I.I. Protsenko, D.A. Abusuek, A.O. Zaykovskaya, A.V. Bykov, V. Matveeva, E. Sulman   +6 more
doaj   +1 more source

An Efficient Continuous Flow Synthesis for the Preparation of N-Arylhydroxylamines: Via a DMAP-Mediated Hydrogenation Process

Molecules, 2023
The selective hydrogenation of nitroarenes to N-arylhydroxylamines is an important synthetic process in the chemical industry. It is commonly accomplished by using heterogeneous catalytic systems that contain inhibitors, such as DMSO.
Jianli Chen, Xinyu Lin, Feng Xu, Kejie Chai, Minna Ren, Zhiqun Yu, Weike Su, Fengfan Liu   +7 more
doaj   +1 more source

Breaking scaling relationships in alkynol semi-hydrogenation by manipulating interstitial atoms in Pd with d-electron gain

Nature Communications, 2022
Circumventing the linear scaling relationship in the semi-hydrogenation is challenging. Here the authors report a method for breaking the scaling relationships using ordered mesoporous carbon-supported Pd nanocatalysts with d-electron gain by p-block ...
Yang Yang, Xiaojuan Zhu, Lili Wang, Junyu Lang, Guohua Yao, Tian Qin, Zhouhong Ren, Liwei Chen, Xi Liu, Wei Li, Ying Wan   +10 more
doaj   +1 more source

Selective Hydrogenation of Acetylene over a MoP Catalyst

, 2011
Selective Hydrogenation of Acetylene over a MoP CatalystA MoP catalyst was prepared by high temperature hydrogen reduction. Its properties were investigated by X-ray diffraction and in-situ X-ray photoelectron spectroscopy.
Jiang Zongxuan, Ying Pinliang, Wang Puguang, Zhou Guilin, Li Can, 李灿   +5 more
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