Results 31 to 40 of about 36,454 (168)

"Hydrogenated nitrile rubber with different hydrogenation degrees prepared by solution hydrogenation method"

open access: yesHecheng xiangjiao gongye
Hydrogenated nitrile rubber with hydrogenation degree of 90%, 95% and 99% was prepared by solution hydrogenation of nitrile rubber with ruthenium catalyst, the effects of catalyst amount, solid rubber content and filling volume of reactor on ...
LI Wen-xina, LIU Ping-pingb, LI Lina, WANG Huia
doaj   +1 more source

Recent Advances in Iridium-Catalyzed Asymmetric Hydrogenation: New Catalysts, Substrates and Applications in Total Synthesis

open access: yesCHIMIA, 2012
Iridium-catalyzed asymmetric hydrogenation has emerged as a highly efficient method for the synthesis of enantiomerically pure compounds. This account summarizes our recent efforts in this field.
Adnan Ganić   +3 more
doaj   +1 more source

Study of Solvent and Catalyst in Diimide Biphasic Hydrogenation System of Natural Rubber

open access: yesInternational Journal of Technology
In Indonesia, solid rubber is the most common form of natural rubber (NR) intermediates because it is easy to store and transport. However, hydrogenation, a process aimed at improving the quality of NR by addressing its vulnerability to environmental ...
Dody Andi Winarto   +4 more
doaj   +1 more source

Hydrogenation of Aromatic Nitrocompounds on Supported Mono- and Bimetallic Catalysts

open access: yesEurasian Chemico-Technological Journal, 2000
Catalytic hydrogenation of substituted aromatic nitrocompounds and hydrocarbons has been studied. It was established that monometallic Pd-catalysts were suitable for reduction of nitrogroups.
A. T. Massenova, L. R. Sassykova
doaj   +1 more source

MIL‐100(Fe) Supported Pt−Co Nanoparticles as Active and Selective Heterogeneous Catalysts for Hydrogenation of 1,3‐Butadiene

open access: yesChemistryOpen, 2022
Superior catalytic performance for selective 1,3‐butadiene (1,3‐BD) hydrogenation can usually be achieved with supported bimetallic catalysts. In this work, Pt−Co nanoparticles and Pt nanoparticles supported on metal–organic framework MIL‐100(Fe ...
Prof. Lili Liu   +6 more
doaj   +1 more source

Mechanism of Semi-Hydrogenation of Trace Acetylene in Ethylene by [MB12Hx]2-

open access: yesTaiyuan Ligong Daxue xuebao
[Purposes] The main problem of semi-hydrogenation of trace acetylene in ethylene is excessive hydrogenation. High concentration of ethylene is the main cause of excessive hydrogenation, so it is important to design a catalyst with acetylene enrichment ...
CHEN Kangjie   +4 more
doaj   +1 more source

Metal oxides and their roles in heterogeneous catalysis: special emphasis on synthesis protocols, intrinsic properties, and their influence in transfer hydrogenation reactions

open access: yesSN Applied Sciences, 2023
This review emphasizes La-based metal oxides of the perovskite form and their application in heterogeneous catalytic transfer hydrogenation (CTH) reactions from year 2013. Perovskites are potential alternatives to noble metals. The possibility of induced-
Tafadzwa Precious Mabate   +4 more
doaj   +1 more source

Selective photocatalytic hydrogenation of citral over pure TiO 2 nanoparticle

open access: yesMaterials Research Express, 2022
The α , β -unsaturated aldehydes selective hydrogenation, especially the C=O bond, is an extremely challenging topic in the field of catalysis. In this paper, a series of pure TiO _2 photocatalysts obtained at various calcination temperature were tested ...
Chao Luo   +6 more
doaj   +1 more source

2030 Ambitions for Hydrogen, Clean Hydrogen, and Green Hydrogen

open access: yesASEC 2023, 2023
Hydrogen production has been dominated by gray hydrogen (hydrogen produced from fossil fuels without carbon capture). Historical data for 2019–2021 show nearly steady global production of and demand for hydrogen, with an annual average of 92 Mt (million tonnes) for each.
openaire   +2 more sources

Internal lattice oxygen sites invert product selectivity in electrocatalytic alkyne hydrogenation over copper catalysts

open access: yesNature Communications
Copper-based catalysts exhibit excellent performance of electrocatalytic alkynes hydrogenation, especially for the selective alkynes hydrogenation toward alkenes.
Mengyu Li   +11 more
doaj   +1 more source

Home - About - Disclaimer - Privacy