A comprehensive study on the acidic and coking properties of selectivated H-ZSM-5 catalysts during xylene isomerization has been made. The effects of surface modification by pre-coking and silylation on the nature and location of carbonaceous deposits and on related acidic features of the spent catalysts were respectively characterized by Xe NMR of adsorbed Xe and solid-state P MAS NMR of adsor...

The adsorption pore structure is the key affecting technology of enhanced coal bed methane recovery (ECBM). In this paper, nitrogen measurement (NAM) and low-field nuclear magnetic resonance (NMR) methods are used to test structural parameters pores four samples with different metamorphic degrees. Combining fractal theory, applicability physical significance dimensions obtained from models anal...

The successful supply of an economy with coal fuel, for a country that carries out its large-scale extraction and import, is complex production logistics problem. Violations the usual scheme in conditions crises energy markets, international conflicts, etc., lead to problem simultaneous restructuring entire scheme. This requires changes directions capacities domestic imports. In this article, a...

The maintenance of furnaces is one the most important problems for by-product coke production. Swelling pressure least studied factors affecting lining furnace walls. results studies swelling PJSC “Koks” feedstock coal are presented in this paper. Research has been carried out to identify dependence on quality indicators, estimated during incoming control central plant laboratory “Koks”. plasti...