Pyrolysis of Waste Polystyrene to Recover Styrene over Alkaline Mesoporous Molecular Sieve K2O-BaO/MCM-41

摘要：

Mesoporous molecular sieve BaO/MCM-41 catalyst was synthesized under hydrothermal conditions and K2OBaO/MCM-41 molecular sieve was prepared by impregnating BaO/MCM-41 with KNO3. The obtained K2OBaO/MCM-41 was used in catalytic pyrolysis of polystyrene(PS). The effects of catalyst kind, content of K2O, reaction temperature, pressure and time on pyrolysis results of PS were examined. The results showed that K2O-BaO/IMCM-41 had better catalytic performance. Under the conditions of m (catalyst)/m(PS)=2％, temperature 410℃, pressure 0.01MPa and time 20 min, the conversion of PS was ≥ 98％, the yield of liquid product was≥ 96％ and the content of styrene in liquid product was > 73％. The reusability of the catalyst was investigated and there was no obvious decrease in conversion of PS, yield of liquid products and content of styrene in liquid products after the catalyst was reused for 5 times. Moreover, K2O-BaO/MCM-41 was characterized by XRD.

关键词： alkaline mesoporous molecular sieve waste polystyrene catalytic pyrolysis recover

作者: Li Jianfeng Liu Fusheng Yu Shitao Ge Xiaoping Zhai Xin

作者单位: College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 126-129

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）