Reaction Behaviors and Kinetics during Induction Period of Methanol Conversion on HZSM-5 Zeolite
文献类型：期刊论文
| 作者 | Qi, Liang1,2; Wei, Yingxu1; Xu, Lei1; Liu, Zhongmin1 |
| 刊名 | acs catalysis
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 5期号:7页码:3973-3982 |
| 关键词 | methanol induction period kinetics activation energy HZSM-5 |
| 英文摘要 | the reaction behavior in the induction period of the methanol to hydrocarbon (mth) reaction over hzsm-5 (si/al = 19) zeolite has been investigated in a fixed-bed reactor. it is found that the induction period could be more than 2 h when the reaction was performed at a temperature of 255 degrees c and below. meanwhile, three reaction stages can be clearly distinguished in the induction period: i.e., the initial c-c bond formation stage, the hydrocarbon pool (hcp) species formation stage, and the autocatalysis reaction stage. for each reaction stage, the kinetic parameters as well as the apparent activation energies have been evaluated. the hcp species formation stage is shown to be the rate-determining step. addition of a ppm amount (molar) of benzene, toluene, or p-xylene to the methanol feed leads to a shortened induction period due to a lower energy barrier for both the hcp species formation and the autocatalysis reaction. a critical value of hcp species, [hcp](c), that is required for starting the autocatalysis reaction (the third stage) has been proposed. this critical value was measured to be 1 toluene molecule per 276 unit cells for hzsm-5 zeolite when toluene is cofed with methanol. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | surface methoxy groups ; to-olefin process ; functional theory calculations ; dimethyl ether formation ; carbon-carbon bond ; in-situ ; hydrocarbon formation ; reaction-mechanism ; zsm-5 zeolite ; aromatic-hydrocarbons |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000357626800009 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146397]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, iChEM Collaborat Innovat Ctr Chem Energy Mat, Natl Engn Lab Methanol Olefins,Dalian Natl Lab Cl, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Liang,Wei, Yingxu,Xu, Lei,et al. Reaction Behaviors and Kinetics during Induction Period of Methanol Conversion on HZSM-5 Zeolite[J]. acs catalysis,2015,5(7):3973-3982. |
| APA | Qi, Liang,Wei, Yingxu,Xu, Lei,&Liu, Zhongmin.(2015).Reaction Behaviors and Kinetics during Induction Period of Methanol Conversion on HZSM-5 Zeolite.acs catalysis,5(7),3973-3982. |
| MLA | Qi, Liang,et al."Reaction Behaviors and Kinetics during Induction Period of Methanol Conversion on HZSM-5 Zeolite".acs catalysis 5.7(2015):3973-3982. |
入库方式： OAI收割
来源：大连化学物理研究所
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