M. R. Agliullin, A. N. Khazinov, A. F. Akhmetov, O. A. Baulin
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Silicoaluminophosphate Molecular Sieves with Different Silica Contents and Their Catalytic Properties in the Oligomerization of α-Methylstyrene
Silicoaluminophosphate molecular sieves SAPO‑11 were obtained from gels with different silica contents. Silicoaluminophosphates as cubic crystals with 0.5 mm diameter were obtained from gels with SiO2/Al2O3 ratio equal to 0.1, while samples with the ratio SiO2/Al2O3 = 0.5 were obtained as extended prisms with 1‑2 mm diameter. Increasing the SiO2/Al2O3 ratio from 0.1 to 0.4 leads a greater amount of acid sites and a decrease in the specific surface. The conversion of a‑methylstyrene as well as the yield of linear dimers and cyclic trimers both increase with an increasing amount of acid sites and greater external surface.
期刊介绍：
Chemistry and Technology of Fuels and Oils publishes reports on improvements in the processing of petroleum and natural gas and cracking and refining techniques for the production of high-quality fuels, oils, greases, specialty fluids, additives and synthetics. The journal includes timely articles on the demulsification, desalting, and desulfurizing of crude oil; new flow plans for refineries; platforming, isomerization, catalytic reforming, and alkylation processes for obtaining aromatic hydrocarbons and high-octane gasoline; methods of producing ethylene, acetylene, benzene, acids, alcohols, esters, and other compounds from petroleum, as well as hydrogen from natural gas and liquid products.
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