低碳化学与化工2023，Vol.48Issue(6)：30-36,7.DOI:10.12434/j.issn.2097-2547.20230017
废ZSM-5分子筛再晶化并应用于甲烷部分氧化性能研究
Study on recrystallization of waste ZSM-5 molecular sieve and its application in partial oxidation of methane
摘要
Abstract
The resource utilization of waste ZSM-5 molecular sieve can effectively reduce the discharge of industrial solid waste and reduce environmental pollution,which is an energy saving,green and sustainable development route.The green recovery process of directional regeneration of waste zeolite molecular sieve catalyst(mainly waste ZSM-5 molecular sieve)into ZSM-5 molecular sieve was explored,focusing on the impact of template dosage,external silicon source dosage and template type on the recovery rate of waste zeolite molecular sieve catalyst.X-ray diffraction(XRD),nitrogen adsorption/desorption,and scanning electron microscopy(SEM)were used to analyze crystallinity,specific surface area,and morphology of the synthesized molecular sieve.The optimal synthesis conditions are optimized as follows:when the template is tetra propyl ammonium hydroxide(TAPAOH),the ratio of silicon source to template agent is n(SiO2):n(TPAOH)= 1:1,and the ratio of the amount of silicon added to the amount of silicon source of waste molecular sieve is n(Si addition):n(Si waste)= 2.5:1.0,the recovery rate of waste zeolite molecular sieve catalyst can reach 88.0%.The ZSM-5 molecular sieve catalyst,which is recrystallized using waste molecular sieve catalyst,is used as a carrier for catalytic performance testing in methane partial oxidation reaction.It exhibits better CH4 conversion rate,CO selectivity,and H2 selectivity against unchanged waste raw materials at 600 ℃.关键词
沸石废分子筛/绿色回收/ZSM-5分子筛/载体/甲烷部分氧化Key words
zeolite waste molecular sieve/green recycling/ZSM-5 molecular sieve/carrier/partial oxidation of methane分类
化学化工引用本文复制引用
王进,丁传敏,吕岩,王琦琛,石子兴,原沁波,刘世斌,王俊文..废ZSM-5分子筛再晶化并应用于甲烷部分氧化性能研究[J].低碳化学与化工,2023,48(6):30-36,7.基金项目
国家自然科学基金(21706178). （21706178）
