化工进展
化工進展
화공진전
Chemical Industry and Engineering Progress
2015年
9期
3311-3316,3336
,共7页
多级孔道分子筛%ZSM-5%后处理%硬模板%软模板
多級孔道分子篩%ZSM-5%後處理%硬模闆%軟模闆
다급공도분자사%ZSM-5%후처리%경모판%연모판
hierarchical zeolite%ZSM-5%post-treatment%hard template%soft template
多级孔道ZSM-5分子筛具有微孔沸石分子筛良好的择形催化性能和介孔材料优异的传质扩散性能,在催化领域显示出良好的应用前景.本文综述了近年来多级孔道 ZSM-5 分子筛的研究进展,重点介绍了多级孔道ZSM-5 分子筛的不同合成方法,包括后处理法、硬模板法和软模板法等,同时介绍了不同方法得到的多级孔道ZSM-5分子筛在催化反应中的应用,分析表明多级孔道ZSM-5分子筛以其良好的扩散性能和适宜的酸性提高了反应转化率和目标产物选择性.最后对多级孔道ZSM-5分子筛的发展方向进行了展望,指出研发简单、经济和环保的新合成路线是多级孔道ZSM-5分子筛发展中的重大挑战,深入研究多级孔道分子筛中介孔的形成机理和开发具有多级孔道整体式催化剂以及负载型多级孔道ZSM-5分子筛是今后的研究重点.
多級孔道ZSM-5分子篩具有微孔沸石分子篩良好的擇形催化性能和介孔材料優異的傳質擴散性能,在催化領域顯示齣良好的應用前景.本文綜述瞭近年來多級孔道 ZSM-5 分子篩的研究進展,重點介紹瞭多級孔道ZSM-5 分子篩的不同閤成方法,包括後處理法、硬模闆法和軟模闆法等,同時介紹瞭不同方法得到的多級孔道ZSM-5分子篩在催化反應中的應用,分析錶明多級孔道ZSM-5分子篩以其良好的擴散性能和適宜的痠性提高瞭反應轉化率和目標產物選擇性.最後對多級孔道ZSM-5分子篩的髮展方嚮進行瞭展望,指齣研髮簡單、經濟和環保的新閤成路線是多級孔道ZSM-5分子篩髮展中的重大挑戰,深入研究多級孔道分子篩中介孔的形成機理和開髮具有多級孔道整體式催化劑以及負載型多級孔道ZSM-5分子篩是今後的研究重點.
다급공도ZSM-5분자사구유미공비석분자사량호적택형최화성능화개공재료우이적전질확산성능,재최화영역현시출량호적응용전경.본문종술료근년래다급공도 ZSM-5 분자사적연구진전,중점개소료다급공도ZSM-5 분자사적불동합성방법,포괄후처리법、경모판법화연모판법등,동시개소료불동방법득도적다급공도ZSM-5분자사재최화반응중적응용,분석표명다급공도ZSM-5분자사이기량호적확산성능화괄의적산성제고료반응전화솔화목표산물선택성.최후대다급공도ZSM-5분자사적발전방향진행료전망,지출연발간단、경제화배보적신합성로선시다급공도ZSM-5분자사발전중적중대도전,심입연구다급공도분자사중개공적형성궤리화개발구유다급공도정체식최화제이급부재형다급공도ZSM-5분자사시금후적연구중점.
Due to high shape selectivity of microporous zeolite and the excellent mass transport of the mesoporous material,the hierarchical ZSM-5 zeolite has potential applications in catalytic field. The synthesis methods and application progress of hierarchical ZSM-5 zeolite in recent years are reviewed in this paper. Various approaches of hierarchical ZSM-5 zeolite synthesis were introduced,including post-treatment method,hard templating method and soft templating method. In addition,the catalytic applications of the as-synthesized zeolites were discussed. It was demonstrated that the reaction conversion and selectivity of target products were improved due to the excellent mass transport and appropriate acidity of the hierarchical ZSM-5 zeolite. This paper also forecasted the development of the hierarchical ZSM-5 zeolite in chemical industry. It was pointed out that the development of facile, economic and green routes towards the synthesis of hierarchical ZSM-5 zeolite would be a challenge in modern industrial catalysis. Research should focus on the mechanism of the mesopore formation,the development of the hierarchical ZSM-5 monolith zeolite as well as the supported hierarchical ZSM-5 zeolites.
