Choosing a Microspherical Catalyst for Partial Oxidation of Methane to a Hydrogen-Containing Gas

Russian Journal of Applied Chemistry - The influence of the chemical composition of microspherical nickel–cobalt catalysts on aluminosilicate and aluminum oxide supports on the catalytic...     

Relationships of the Production of Hydrogen-Containing Gas from Methane on a Pilot Installation with a Moving Bed of a Microspherical Catalyst and Separate Supply of the Feed and Oxidant

Russian Journal of Applied Chemistry - The concept of a new technology for producing hydrogen-containing gas from methane is presented. The process is performed in two separate vessels, a reactor...     

Comparative Evaluation of Zeolite Catalysts of Benzene Alkylation

Using the benzene alkylation reaction with propylene, the catalytic properties of heterogeneous catalysts are compared under conditions of simultaneous action of permanent deactivating factors (atmospheric pressure, increased volume feed rate) on the samples under study. For a comparative evaluation of the tested catalysts, a mathematical analysis of the experimental data on the concentration of the desired alkylation product vs. the time of the catalyst operation was carried out, and a corresponding empirical formula was derived. To compare the activity of catalysts, the power coefficient of the function was proposed as a catalyst activity factor f. A relationship between the value of this factor and the rate of deactivation of the catalyst under the conditions of the experiments was derived.     

Synthesis of liquid hydrocarbons enriched with triptane via dimethyl ether conversion over combined catalyst

A combined catalytic system composed of catalysts with different functions was prepared. The catalyst for the synthesis of lower olefins based on is H-ZSM-5 zeolite modified with Mg, was mixed with the catalyst for alkylation of isobutane by olefins based on H-Y zeolite modified with La and Pd. In the presence of the combined system, liquid branched hydrocarbons were synthesized from dimethyl ether in a hydrogen medium at 340 °C and a pressure of 10 MPa. The effect of the composition of the combined catalyst on its selectivity to liquid hydrocarbons and, specifically, triptane was shown.

     

Production of Ethylene from Ethane Fraction by a Method Alternative to Steam Cracking

Russian Journal of Applied Chemistry - The concept of a new technology for obtaining ethylene from ethane was developed and implemented. In this technology, the process is performed in two separate...