Skeletal isomerization of n-heptane with highly selective Pt/H3PW12O40/SBA-15 trifunctional catalysts

被引：16

作者：

de la Fuente, N. ^{[1
]}

Wang, J. A. ^{[1
]}

Chen, L. F. ^{[1
]}

Gonzalez, J. ^{[1
]}

Salmones, J. ^{[1
]}

Contreras, J. L. ^{[2
]}

Navarrete, J. ^{[3
]}

机构：

[1] Inst Politecn Nacl, Escuela Super Ingn Quim & Ind Extract, Mexico City 07738, DF, Mexico

[2] Univ Autonoma Metropolitana A, Dept Enegia, Av San Pablo 180, Mexico City 02200, DF, Mexico

[3] Inst Mexicano Petr, Direcc Invest, Eje Lazaro Cardenas 152, Mexico City 07730, DF, Mexico

来源：

CATALYSIS COMMUNICATIONS | 2017年 / 102卷

关键词：

Heteropolyacid; Isomerization; n-Heptane; Trifunctional catalyst; SBA-15; HEXANE ISOMERIZATION; SULFATED ZIRCONIA; SURFACE-ACIDITY; MORDENITE; HYDROGEN; ALKANES; PENTANE; SILICA; BUTANE;

D O I：

10.1016/j.catcom.2017.08.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For the first time, highly selective Pt/H3PW12O40/SBA-15 trifunctional catalysts were evaluated for n-heptane hydroisomerization. Both Lewis (L) and Bronsted (B) acid sites were present in these catalysts. Reduction treatment led to heteropolyacid dispersion better and Pt nanoparticles smaller. With the best lwt%Pt/20wt% H3PW12O40/SBA-15 catalyst, 100% isomerization selectivity and 56.74% n-heptane conversion were obtained at 320 degrees C. Among the products, the dibranched isomers concentration faction was > 50% and 2,2-dimethylpentane was predominant. Pt/H3PW12O40/SBA-15 catalysts with Pt nanocrystals, proper acidity strength and a balanced ratio of B/L acid sites, and highly ordered large mesopores were chiefly responsible for the high isomerization selectivity.

引用

页码：93 / 97

页数：5

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