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

作者：Zeng, Danlin^*; Liu, Shenglan; Gong, Wanjun; Wang, Guanghui; Qiu, Jianghua; Tian, Yongsheng

来源：Catalysis Communications, 2013, 40: 5-8.

DOI：10.1016/j.catcom.2013.05.018

• Solid acid
• Petroleum coke
• Chemical activation
• Acidity

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.

• 出版日期2013-10-5
• 单位武汉科技大学