Catalytic fast pyrolysis of cellulose over different metal-modified ZSM-5 zeolites for light olefins
Catalytic fast pyrolysis of cellulose over different metal-modified ZSM-5 zeolites for light olefins
复制标题
不同金属改性 ZSM-5 沸石催化纤维素快速热解制低碳烯烃
DOI：
10.1016/j.jaap.2022.105628
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发表时间：
2022-07
影响因子：
6
通讯作者：
Hanping Chen
中科院分区：
文献类型：
--
作者：
Jing’ai Shao;Hao Jiang;Mingfa Yang;Jianjun Xiao;Haiping Yang;Yingquan Chen;Shihong Zhang;Hanping Chen
低碳烯烃（C2 H4、C3 H6和C4 H8）是现代能源和材料体系中重要的化学结构单元。在固定床反应器中，考察了不同金属改性ZSM-5催化剂对纤维素快速裂解制低碳烯烃的影响。采用浸渍法制备了Fe、La、Cu、Mg、Al和Ce改性ZSM-5分子筛催化剂，并采用不同的分析仪器对改性ZSM-5分子筛催化剂进行了表征。探讨了催化剂性能与低碳烯烃产率的关系。结果表明，改性后的ZSM-5分子筛保持了其特有的MFI型结构，但比表面积、孔容和酸中心数量发生了变化。在Cu-ZSM-5上获得最高的轻烯烃产率（7. 64 C-mol%），而在Mg-ZSM-5上获得最低的轻烯烃产率（3. 75 C-mol%）。增加ZSM-5其它孔容和比表面积、中酸性和强酸性，降低微孔容和比表面积、弱酸性，有利于低碳烯烃的生成。研究结果对设计高效的ZSM-5型低碳烯烃催化剂具有一定的指导意义。·在金属改性的ZSM-5催化剂上进行纤维素催化热解。· Cu改性的ZSM-5表现出最高的轻质烯烃产率，为7. 64 C-mol%。Ce、La、Cu、Mg、Al对ZSM-5催化剂上C2 H4选择性的促进作用依次为：Ce> La> Cu> Mg> Al。·ZSM-5的微孔表面积和弱酸性抑制轻质烯烃的形成。
Light olefins (C 2 H 4 , C 3 H 6 and C 4 H 8 ) are important chemical building blocks in modern energy and material system. In this study, the effects of different metal-modified ZSM-5 catalysts on the production of light olefins from cellulose fast pyrolysis were investigated in a fixed bed. Fe, La, Cu, Mg, Al and Ce modified ZSM-5 were prepared by the impregnation method, and then the derived modified ZSM-5 catalysts were characterized by different analytical instruments. The correlation between catalyst characteristics and the production of light olefins was explored. The results showed that the specific MFI-type structure of ZSM-5 remained intact after modification, and the surface area, pore volume and the amount of acid sites of catalysts varied. The highest light olefins yield was obtained over Cu-ZSM-5 (7.64 C-mol%), while the lowest was achieved over Mg-ZSM-5 (3.75 C-mol%). Moreover, the formation of light olefins can be promoted with the increasing of ZSM-5 other-pore volume and surface area, medium and strong acidity, and the decreasing of micro-pore volume and surface area, weak acidity. The results may share some light on the design of high efficiency ZSM-5 catalyst for high light olefins production. • Cellulose catalytic pyrolysis was conducted over metal-modified ZSM-5 catalysts. • Cu modified ZSM-5 exhibited the highest light olefins yield of 7.64 C-mol%. • C 2 H 4 selectivity on ZSM-5 can be promoted by Ce, La, Cu, Mg, Al in the order. • Micropore surface area and weak acidity of ZSM-5 inhibit light olefins formation.
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影响因子：
10.4
作者：
Demirbas, Ayhan
通讯作者：
Demirbas, Ayhan
碱和镍改性ZSM-5催化热解稻草半纤维素生产芳烃的性能
影响因子：
8.7
作者：
Nishu;Li Chong;Chai Meiyun;Rahman Md Maksudur;Li Yingkai;Sarker Manobendro;Liu Ronghou
通讯作者：
Liu Ronghou
影响因子：
5.2
作者：
Landong Li;N. Guan
通讯作者：
Landong Li;N. Guan
影响因子：
16.6
作者：
Yang Q;Zhou H;Bartocci P;Fantozzi F;Mašek O;Agblevor FA;Wei Z;Yang H;Chen H;Lu X;Chen G;Zheng C;Nielsen CP;McElroy MB
通讯作者：
McElroy MB
DOI：
10.1016/j.scitotenv.2017.12.194
发表时间：
2018-06
期刊：
The Science of the total environment
影响因子：
--
作者：
Y. Awad;Y. Ok;J. Abrigata;Jingzi Beiyuan;Felix Beckers;Daniel C W Tsang;J. Rinklebe
通讯作者：
Y. Awad;Y. Ok;J. Abrigata;Jingzi Beiyuan;Felix Beckers;Daniel C W Tsang;J. Rinklebe