Thermal Analysis Kinetics of Pd-Doped SiO2 Organic-Inorganic Hybrid Material

摘要：

　　Pd-doped SiO2 organic-inorganic hybrid material (Pd/M-SiO2) was prepared by sol-gel method and characterized by XRD, FTIR spectra and TG/DTG analysis.The most probable kinetic mechanism function, apparent activation energy and pre-exponential factor of the thermal decomposition for Pd/M-SiO2 material were calculated using the combined Coast-Redfern intergral and Achar differential methods.Pd element in noncalcined Pd/M-SiO2 materials exists in PdCl2 form.FTIR spectroscopy confirmed the existence of hydrophobic Si-CH3 groups.The thermal decomposition process of Pd/M-SiO2 materials can be divided into four stages, with different mechanism functions.The activation energies are 76.37, 146.85, 208.90 and 413.89 kJ.mol-1 for the four stages, respectively, and the pre-exponential factors are 5.04×1012, 7.14× 1013, 2.93×1012 and 6.56×1019 s-1, respectively.There is no obvious influence of the existence of metallic Pd0 on the thermal decomposition of methyl.

关键词： Methyl modification Palladium-doped silica Coast-Redfern intergral method Achar differential method Kinetic triplets

作者: Jing Yang Hong-jun Li Rui-hua Mu Ya-mei Zhao Zhi Tong

作者单位: School of Environment&Chemistry Engineering, Xian Polytechnic University, Xian, Shaanxi, China

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 272-279

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）