DICP OpenIR
Study on the induction period of methane aromatization over Mo/HZSM-5: partial reduction of Mo species and formation of carbonaceous deposit
Jiang, H; Wang, LS; Cui, W; Xu, YD
关键词Methane Aromatization Induction Period Mo Species Partial Reduction Carbonaceous Deposit
刊名CATALYSIS LETTERS
1999
57期:3页:95-102
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]SUPPORTED MOLYBDENUM OXIDE ; CATALYSTS ; BENZENE ; DEHYDROGENATION ; ACTIVATION ; CONVERSION ; TRANSFORMATION ; AROMATICS ; MO/ZSM-5 ; OXIDANTS
英文摘要The induction period of dehydrogenation and aromatization of methane over Mo/HZSM-5 was studied by combining a pulse reaction method with TPSR, UV laser Raman, and C-13 CPMAS NMR techniques. BET and XRD results showed that Mo species were well dispersed on/in the zeolite. TPSR in CH4 stream revealed that Mo species were reduced in at least two different stages before the formation of benzene. TPR results were in agreement with TPSR results. The two stages might be attributed to the reduction of two kinds of Mo6+ species to low valence Mo species. One was polymolybdate MoO3, and the other was crystalline MoO3. UV Raman spectra showed the existence of octahedrally coordinated polymolybdate species. XRD, however, did not detect any crystalline MoO3, possibly because they were too small to be detected with this technique. Pulse reaction results indicated that pre-reduction of the catalyst and formation of carbonaceous deposit could shorten the induction period. It is concluded that the formation of active sites during the induction period via partial reduction of Mo6+ species and formation of carbonaceous deposit on partially reduced Mo species is of significance for methane aromatization over Mo/HZSM-5.
语种英语
WOS记录号WOS:000078796000002
引用统计
被引频次:78[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138640
专题中国科学院大连化学物理研究所
作者单位Acad Sinica, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Jiang, H,Wang, LS,Cui, W,et al. Study on the induction period of methane aromatization over Mo/HZSM-5: partial reduction of Mo species and formation of carbonaceous deposit[J]. CATALYSIS LETTERS,1999,57(3):95-102.
APA Jiang, H,Wang, LS,Cui, W,&Xu, YD.(1999).Study on the induction period of methane aromatization over Mo/HZSM-5: partial reduction of Mo species and formation of carbonaceous deposit.CATALYSIS LETTERS,57(3),95-102.
MLA Jiang, H,et al."Study on the induction period of methane aromatization over Mo/HZSM-5: partial reduction of Mo species and formation of carbonaceous deposit".CATALYSIS LETTERS 57.3(1999):95-102.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Jiang, H]的文章
[Wang, LS]的文章
[Cui, W]的文章
百度学术
百度学术中相似的文章
[Jiang, H]的文章
[Wang, LS]的文章
[Cui, W]的文章
必应学术
必应学术中相似的文章
[Jiang, H]的文章
[Wang, LS]的文章
[Cui, W]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。