HZSM-5分子筛催化氯甲烷制低碳烯烃
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- 英文论文题名：Catalytic conversion of chloromethane to olefins by HZSM-5
- 论文作者：荆开石 ; 崔咪芬 ; 费兆阳 ; 乔旭
- 英文论文作者：Kaishi Jing ; Mifen Cui ; Zhaoyang Fei ; Xu Qiao ; College of Chemical Engineering ; Nanjing Tech University
- 年：2016
- 作者机构：南京工业大学化工学院;
- 论文关键词：氯甲烷 ; 烯烃 ; ZSM-5 ; MeXTO
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十三分会：绿色化学
- 语种：中文
- 分类号：O643.36;TQ221.2
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十三分会 ; 绿色化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：149k
- 原文格式：D
- 会议级别：全国
摘要
天然气经由氯甲烷制取高附加值的低碳烯烃用以缓解石油短缺,已引起世界各国的广泛关注。其中氯甲烷制备低碳烯烃的研究至关重要,本文采用HZSM-5分子筛,催化偶联氯甲烷制低碳烯烃,探究了硅铝比和空速对产物低碳烯烃分布的影响。随着空速增大,氯甲烷的转化率逐渐降低。结合催化剂表面酸性质可以看出,随着硅铝比的增大,酸量降低,由于此反应是酸催化,酸量减少会降低反应活性。该反应是连串反应,空速增大,致使反应进行程度相对较低,因此随着空速逐渐增大,低碳烯烃的选择性逐渐增大;同一空速下,低碳烯烃的选择性随着硅铝比的增大而升高。
Light olefins production via chloromethane coupling plays an important role in natural gas implication, thus receiving an increasing number of concerns. This work presents the reaction on H-ZSM-5 zeolites and the impacts on the product distribution of both silica-alumina ratios and reaction conditions were studied. Results show higher silica-alumina ratio and space velocity lead to a decreasing CH_3Cl conversion along with an increasing selectivity of light olefins, for the process is an acid catalyzed consecutive reaction.
Light olefins production via chloromethane coupling plays an important role in natural gas implication, thus receiving an increasing number of concerns. This work presents the reaction on H-ZSM-5 zeolites and the impacts on the product distribution of both silica-alumina ratios and reaction conditions were studied. Results show higher silica-alumina ratio and space velocity lead to a decreasing CH_3Cl conversion along with an increasing selectivity of light olefins, for the process is an acid catalyzed consecutive reaction.
引文
[1]I banez M,Gamero M,Ruiz-Martínez J.Catal.sci.technol.2016,6:296-306.