New hybrid organic-inorganic composites based on sulfur-containing styrene copolymers and allyl glycidyl ether and tetraethoxysilane were obtained by a sol-gel synthesis method. The membranes created on the basis of composites have protonconductive properties and are characterized by a higher heat-exchange capacity compared with commercial membranes as Nafion and MF-4 SK, enabling to consider them as perspective membrane materials for fuel cells.

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The main reasons for the decrease in the efficiency of tube furnaces are considered. Methods to eliminate these causes are also proposed

The synthesis of methanol on zinc-chromium catalyst was simulated in this work. The process model was compiled using the DWSim. Calculated results are in good agreement with practical data. It indicates the adequacy of the formed model.

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