Acid properties of solid acid from petroleum coke by chemical activation and sulfonation

被引：20

作者：

Zeng, Danlin ^{[1
]}

Liu, Shenglan ^{[1
]}

Gong, Wanjun ^{[1
]}

Wang, Guanghui ^{[1
]}

Qiu, Jianghua ^{[1
]}

Tian, Yongsheng ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, Coll Chem Engn & Technol, Hubei Key Lab Coal Convers & New Carbon Mat, Wuhan 430081, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2013年 / 40卷

关键词：

Solid acid; Petroleum coke; Chemical activation; Acidity; STATE; NMR; CARBONIZATION; ZEOLITE;

D O I：

10.1016/j.catcom.2013.05.018

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：

A novel solid acid was prepared from petroleum coke by KOH chemical activation and concentrated H2SO4 sulfonation. The solid acid was characterized by XRD, FT-IR and solid-state NMR. The characterization results show that the chemical activation and sulfonation lead to three functional Bronsted acid sites: -OH, -COOH and -SO3H on the solid acid. The probe molecules experimental reveal that the acid strength of the solid acid is stronger than that of SO42-/ZrO2, but slightly weaker than that of 100% H2SO4. The catalytic performance was evaluated by the esterification of oleic acid with methanol. The results indicate that this solid acid catalyst is very active, corresponding to high conversion (72%) of esterification reaction. In addition, the spent solid acid can be recovered by simple regeneration process. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：5 / 8

页数：4

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