Activation of CO and surface carbon species for conversion of syngas to light olefins on ZnCrOx-Al2O3 catalysts

doi:10.1016/j.apsusc.2019.07.082

	Activation of CO and surface carbon species for conversion of syngas to light olefins on ZnCrOx-Al2O3 catalysts
	Li, Yangyang 2; Hu, Jun 2; Xu, Jie 2; Zheng, Yanping 2; Chen, Mingshu 2; Wan, Huilin 2; Fu, Qiang 1; Yang, Fan 1; Bao, Xinhe 1
刊名	APPLIED SURFACE SCIENCE
	2019-11-15
卷号	494 页码:353-360
关键词	ZnCrOx-Al2O3 catalyst CO hydrogenation Light olefins Surface carbon species In situ spectroscopies
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2019.07.082
通讯作者	Chen, Mingshu(chenms@xmu.edu.cn)
英文摘要	As an effective part of the bifunctional catalyst for conversion of syngas to light olefins, ZnCrOx-Al2O3 mixed oxides were studied using surface sensitive techniques of X-ray photoelectron spectroscopy (XPS) and high-sensitivity low-energy ion scattering spectroscopy (HS-LEIS), as well as in situ Fourier Transform infrared spectroscopy (FTIR) and temperature-programmed desorption (TPD). Reducing and oxidizing treatments induce significant changes of the top-surface compositions as observed by HS-LEIS. After CO/H-2 treatment, an obvious amount of dissociated carbon and oxygen-containing carbon species were evidenced on the surface by XPS and HS-LEIS. The oxygen-containing carbon species include bicarbonate, carbonate and formate, and can be efficiently removed under H-2. Formate species may be formed by hydrogenation of the carbonate and bicarbonate species, and can be removed to regenerate the active sites for CO dissociation. TPD results under H-2 atmosphere show the production of methane, ethane and methanol for the surface pre-treating in CO at 300 degrees C.
资助项目	National Natural Science Foundation of China[91545204] ; National Natural Science Foundation of China[21573180] ; National Natural Science Foundation of China[21872110]
WOS关键词	METHANOL SYNTHESIS ; SYNTHESIS GAS ; OXIDATIVE DEHYDROGENATION ; SELECTIVE CONVERSION ; DOPED GRAPHENE ; MIXED OXIDES ; HYDROGENATION ; TRANSFORMATION ; ADSORPTION ; NANOPARTICLES
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000487838900041
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/172246]
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
通讯作者	Chen, Mingshu
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China 2.Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces,Natl Engn, Xiamen 361005, Fujian, Peoples R China
推荐引用方式 GB/T 7714	Li, Yangyang,Hu, Jun,Xu, Jie,et al. Activation of CO and surface carbon species for conversion of syngas to light olefins on ZnCrOx-Al2O3 catalysts[J]. APPLIED SURFACE SCIENCE,2019,494:353-360.
APA	Li, Yangyang.,Hu, Jun.,Xu, Jie.,Zheng, Yanping.,Chen, Mingshu.,...&Bao, Xinhe.(2019).Activation of CO and surface carbon species for conversion of syngas to light olefins on ZnCrOx-Al2O3 catalysts.APPLIED SURFACE SCIENCE,494,353-360.
MLA	Li, Yangyang,et al."Activation of CO and surface carbon species for conversion of syngas to light olefins on ZnCrOx-Al2O3 catalysts".APPLIED SURFACE SCIENCE 494(2019):353-360.