Silicoaluminophosphate Molecular Sieves with Different Silica Contents and Their Catalytic Properties in the Oligomerization of α-Methylstyrene

IF 0.6 4区工程技术 Q4 ENERGY & FUELS

Chemistry and Technology of Fuels and Oils Pub Date : 2024-07-19 DOI:10.1007/s10553-024-01714-w

M. R. Agliullin, A. N. Khazinov, A. F. Akhmetov, O. A. Baulin

引用次数: 0

Abstract

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.

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不同二氧化硅含量的硅铝磷酸盐分子筛及其在 α-甲基苯乙烯低聚过程中的催化特性

从二氧化硅含量不同的凝胶中获得了硅铝磷酸盐分子筛 SAPO-11。从 SiO2/Al2O3 比率等于 0.1 的凝胶中获得的硅铝磷酸盐是直径为 0.5 毫米的立方晶体，而 SiO2/Al2O3 比率 = 0.5 的样品则是直径为 1-2 毫米的扩展棱柱。将 SiO2/Al2O3 比率从 0.1 提高到 0.4 会导致酸性位点的增加和比表面的降低。a-甲基苯乙烯的转化率以及线性二聚体和环状三聚体的产量都随着酸性位点的增加和外表面积的增大而增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemistry and Technology of Fuels and Oils 工程技术-工程：化工

CiteScore

0.90

自引率

16.70%

发文量

119

审稿时长

1.0 months

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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