Results 41 to 50 of about 36,454 (168)

Selective Hydrogenation of 1-Hexyne Using Pd-Cu and Pd-W Supported on Alumina Catalysts

Chemical Engineering Transactions, 2013
Vinyl acetylene and 1-butyne are by products in mixed C4 separation processes and they must be eliminated due to their high flammability. However, C4 acetylene can be upgraded to higher value hydrocarbons such as 1,3-butadiene and 1-butene by using ...
P. Insorn, K. Suriyaphaparkorn, B. Kitiyanan   +2 more
doaj   +1 more source

"Emulsifier-regulated synthesis of nitrile rubber and its catalytic hydrogenation in emulsion"

Hecheng xiangjiao gongye
The primary challenge in emulsion hydrogenation resides in maintaining emulsion stability under specific temperature and pressure conditions. This study proposed a strategy involving the incorporation of emulsifiers during the hydrogenation process to ...
GUO Zong-lei1 a, YU Ming-ming2, LI Yan-yan1 b, WANG Hui1 a, WANG Cheng-dong1 a
doaj   +1 more source

Influence of Hydrogenation on Residual Stresses of Pipeline Steel Welded Joints [PDF]

Materials Research, 2016
Hydrogen embrittlement is a phenomenon that affects the performance of steel used for oil and gas pipelines. This paper presents a study of the effect of hydrogenation on the residual stresses of an API 5L X65 steel pipe.
Alexandre Magno de Souza Sant'Anna, Ivan Napoleão Bastos, João Marcos Alcoforado Rebello, Maria P. Cindra Fonseca   +3 more
doaj   +1 more source

Characterization of Hydrogenated Natural Rubber Synthesized by Diimide Transfer Hydrogenation

International Journal of Technology, 2017
Oxidation resistance and thermal stability of natural rubber (NR) can be improved by diimide transfer hydrogenation in the latex phase. In this research, non-catalytic diimide transfer hydrogenation of concentrated NR latex was accomplished at various ...
Adi Cifriadi, Mochamad Chalid, Santi Puspitasari   +2 more
doaj   +1 more source

Alloying and confinement effects on hierarchically nanoporous CuAu for efficient electrocatalytic semi-hydrogenation of terminal alkynes

Nature Communications
Electrocatalytic alkynes semi-hydrogenation to produce alkenes with high yield and Faradaic efficiency remains technically challenging because of kinetically favorable hydrogen evolution reaction and over-hydrogenation.
Linghu Meng, Cheng-Wei Kao, Zhen Wang, Jun Ma, Peifeng Huang, Nan Zhao, Xin Zheng, Ming Peng, Ying-Rui Lu, Yongwen Tan   +9 more
doaj   +1 more source

Ambient hydrogenation of solid aromatics enabled by a high entropy alloy nanocatalyst

Nature Communications
Hydrogenation is a versatile chemical process with significant applications in various industries, including food production, petrochemical refining, pharmaceuticals, and hydrogen carriers/safety.
Zekun Jing, Yakun Guo, Qi Wang, Xinrong Yan, Guozong Yue, Zhendong Li, Hanwen Liu, Ruixuan Qin, Changyin Zhong, Mingzhen Li, Dingguo Xu, Yunxi Yao, Yonggang Yao, Maobing Shuai   +13 more
doaj   +1 more source

Decoupling Electron and Proton Transfer in Noncontact Catalytic Hydrogenation of Nitroaromatics

Advanced Science
Understanding the elementary reactions of active hydrogen species and electron transfer mechanisms during catalytic hydrogenation remains a fundamental challenge.
Zhongyin Liang, Qingyuan Wu, Zhe Yang, Nanfeng Zheng   +3 more
doaj   +1 more source

Hydrogen microscopy – Distribution of hydrogen in buckled niobium hydrogen thin films

International Journal of Hydrogen Energy, 2013
Abstract Hydrogen absorption in thin metal films clamped to rigid substrates results in mechanical stress that changes the hydrogen's chemical potential by ΔμH(σ) = −1.124σ kJ/molH for σ measured in [GPa]. In this paper we show that local stress relaxation by the detachment of niobium hydrogen thin films from the substrate affects the chemical ...
Wagner, Stefan, Moser, Marcus, Greubel, Christoph, Peeper, Katrin, Reichart, Patrick, Pundt, Astrid, Dollinger, Günther   +6 more
openaire   +3 more sources

The Effect of Magnetic Field on Thermal-Reaction Kinetics of a Paramagnetic Metal Hydride Storage Bed

Applied Sciences, 2017
A safe and efficient method for storing hydrogen is solid state storage through a chemical reaction in metal hydrides. A good amount of research has been conducted on hydrogenation properties of metal hydrides and possible methods to improve them ...
Shahin Shafiee, Mary Helen McCay, Sarada Kuravi   +2 more
doaj   +1 more source

Similarities and Differences Between CO2 Reduction and Electro‐Hydrogenation of Organic Carbonyls with Fe Porphyrins: A Case Study

ChemElectroChem
Iron porphyrins are well established for CO2 reduction, the electro‐hydrogenation of a CO bond in CO2, which can proceed via metal‐hydride formation (H+ reduction) or direct CO2 reduction by Fe0 with subsequent protonation.
Tianyin Huang, Yang Lyu, Junhong Chen, Dominik P. Halter   +3 more
doaj   +1 more source