نتایج جستجو برای: hydrogen purification

تعداد نتایج: 200981  

A palladium membrane was prepared using the electroless plating technique (ELP) for the separation and purification of hydrogen from a gas mixture. Depending on operating conditions, hydrogen flux from the membrane was in the range of 0.012-0.023 mol.m-2.s-1. The membrane performance in the presence of CO2 was investigated. The results of the GC analysis showed that at a feed concentration of 1...

Journal: :Inorganic Chemistry 2021

An on-demand electrochemical synthesis of copper(I) triflate under both batch and continuous flow conditions has been developed. A major benefit the methodology is that only byproduct reaction hydrogen gas, which obviates need for workup purification, water not incorporated into product. Upon completion synthesis, solutions are directly transferred or dispensed mixtures catalytic oxidation benz...

Journal: :Physical chemistry chemical physics : PCCP 2013
Wei Hu Xiaojun Wu Zhenyu Li Jinlong Yang

We investigated theoretically the hydrogen permeability and selectivity of a porous silicene membrane via first-principles calculations. The subnanometer pores of the silicene membrane are designed as divacancy defects with octagonal and pentagonal rings (585-divacancy). The porous silicene exhibits high selectivity comparable with graphene-based membranes for hydrogen over various gas molecule...

ژورنال: سلامت کار ایران 2013

  Background and aims: One of the most essential and important steps for improving safety level in existing or designing units is consequence evaluation of hazards such as fire, explosion and dispersion of hazardous chemical substances. Due to severe operational conditions, high explosive and flammable gases such as methane and hydrogen, hydrogen production process is causing major industrial a...

2011
Abraham Fookson Philip Pomerantz Edwin H. Rich

In an investigation of t he physical properties of hydr<;>gen isotopes it was n.ecessar.\:' t o prepare 10 liters of high-purity. hydro~en d~u.tende. TI1JS was don e ~y r eactmg IJ t hlUm aluminum hydride wit h deutenum oXIde, gly.;n~ hydro~en deutende, ]I) .t wo batch~s, ?f 98.1and 97.0-percent purity, respect ive!.\:' . .Ihls mater!ai was t hen frac t IOnated at JtqUJd hydrogen t emperature i...

Journal: :International Journal of Hydrogen Energy 2019

Journal: :TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) 1973

2012
Iftach Yacoby Lotta Tollstoy Tegler Sergii Pochekailov Shuguang Zhang Paul W. King

BACKGROUND Recombinant expression and purification of metallo-enzymes, including hydrogenases, at high-yields is challenging due to complex, and enzyme specific, post-translational maturation processes. Low fidelities of maturation result in preparations containing a significant fraction of inactive, apo-protein that are not suitable for biophysical or crystallographic studies. PRINCIPAL FIND...

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