标题：Thermogravimetric analysis of carbide slag
作者：Niu, Shengli; Liu, Mengqi; Lu, Chunmei; Li, Hui; Huo, Mengjia
作者机构：[Niu, Shengli; Liu, Mengqi; Lu, Chunmei; Li, Hui; Huo, Mengjia] Shandong Univ, Natl Engn Lab Coal Burning Pollutants Emiss Reduc, Sch Energy & Power E 更多
通讯作者地址：[Niu, SL]Shandong Univ, Natl Engn Lab Coal Burning Pollutants Emiss Reduc, Sch Energy & Power Engn, Jingshi Rd 17923, Jinan 250061, Shandong, Peoples 更多
来源：JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
关键词：Thermogravimetric; Carbide slag; Model-free method; Transesterification;; Catalyst
摘要：Potential of carbide slag as transesterification catalyst is validated. Combined with X-ray fluorescence for ingredient determination, X-ray diffraction for textural phase analysis, scanning electron microscope for surface morphology observation and Hammett indicator for basic strength mensuration, thermal event of carbide slag is investigated through thermogravimetric analysis to estimate the potential of this calcium-based industrial waste as transesterification catalyst. Further, kinetic parameters are calculated through model-free method, where the experiments are conducted at temperature heating rates of 5, 10, 15, and 20 K min(-1). As for activation energy and reaction order, Vyazovkin method and Avrami theory are respectively mentioned. Meanwhile, catalytic performance of carbide slag is labeled by transesterification efficiency and calcium hydroxide is conditionally mentioned for comparison. In conclusion, potential of carbide slag as transesterification catalyst is adequately validated.