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Silicoaluminophosphate Molecular Sieves SAPO-11 and SAPO-41: Synthesis, Properties, and Applications for Hydroisomerization of C16+ n-Paraffins. Part 2: Current State of Research on Methods to Control the Crystal Morphology, Dispersion, Acidic Properties, Secondary Porous Structure, and Catalytic Properties of SAPO-11 and SAPO-41 in Hydroisomerization of C16+ n-Paraffins (A Review)
Petroleum Chemistry ( IF 1.4 ) Pub Date : 2021-08-09 , DOI: 10.1134/s096554412108003x
M. R. Agliullin 1 , B. I. Kutepov 1 , V. A. Ostroumova 2 , A. L. Maximov 2
Affiliation  

Abstract

The second part of the review presents the results of research on SAPO-11 and SAPO-41 molecular sieves over the last three decades, with particular emphasis on methods to control the acid properties, morphology, and secondary porous characteristics of these molecular sieves, as well as on the catalytic applications of SAPO-11 and SAPO-41 for hydroisomerization of C16+ n-paraffins. The paper discusses the current understanding of the acid site formation mechanisms in SAPO-11 and SAPO-41, as well as methods for control over the strength and concentration of the acid sites and the morphology and dispersion of the crystals. Recent advances in the synthesis of SAPO-11 and SAPO-41 with a hierarchical porous structure are described, namely the use of pore-forming templates, crystal growth modifiers, and post-synthetic treatment techniques; the pros and cons of different synthesis methods are analyzed. The report also presents the catalytic properties of bifunctional catalytic systems based on SAPO-11 and SAPO-41, including hierarchical structures, in C16+ n-paraffin hydroisomerization. Prospective uses of bifunctional catalytic systems based on SAPO-11 and SAPO-41 for hydroisomerization of base oils are described. Finally, the paper formulates the remaining fundamental problems of SAPO-11 and SAPO-41 synthesis, as well as the prospects for the utilization of these materials as components of high-performance catalysts in the oil refining and petrochemical industries.



中文翻译:

磷酸硅铝分子筛 SAPO-11 和 SAPO-41:C16+ 正链烷烃加氢异构化的合成、性质和应用。第 2 部分:在 C16+ 正构烷烃加氢异构化中控制 SAPO-11 和 SAPO-41 的晶体形态、分散、酸性、二级多孔结构和催化性能的方法的研究现状(综述)

摘要

综述的第二部分介绍了过去三十年来 SAPO-11 和 SAPO-41 分子筛的研究结果,特别强调了控制这些分子筛的酸性、形态和二级孔特性的方法,如以及 SAPO-11 和 SAPO-41 在 C 16+ n加氢异构化中的催化应用-石蜡。本文讨论了目前对 SAPO-11 和 SAPO-41 中酸位形成机制的理解,以及控制酸位强度和浓度以及晶体形态和分散的方法。描述了具有分层多孔结构的 SAPO-11 和 SAPO-41 合成的最新进展,即使用成孔模板、晶体生长改性剂和合成后处理技术;分析了不同合成方法的优缺点。该报告还介绍了基于 SAPO-11 和 SAPO-41 的双功能催化系统的催化性能,包括层次结构,在 C 16+ n-石蜡加氢异构化。描述了基于 SAPO-11 和 SAPO-41 的双功能催化系统在基础油加氢异构化中的预期用途。最后,本文阐述了 SAPO-11 和 SAPO-41 合成中剩余的基本问题,以及这些材料在炼油和石化工业中作为高性能催化剂组分的应用前景。

更新日期:2021-08-10
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