globalchange  > 气候减缓与适应
DOI: 10.1016/j.jcou.2018.01.028
Scopus记录号: 2-s2.0-85042078304
论文题名:
Acidity control of zeolite functionality on activity and stability of hybrid catalysts during DME production via CO2 hydrogenation
作者: Bonura G.; Migliori M.; Frusteri L.; Cannilla C.; Catizzone E.; Giordano G.; Frusteri F.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24
起始页码: 398
结束页码: 406
语种: 英语
英文关键词: Catalysts ; CO2 ; Cu-ZnO-ZrO2 ; Dimethyl ether ; Ferrierite ; Hydrogenation
Scopus关键词: Carbon ; Carbon dioxide ; Catalysts ; Fuels ; Grain size and shape ; Hydrogenation ; Sintering ; Surface properties ; Catalytic behaviour ; CO2 hydrogenation ; Dimethyl ethers ; Experimental conditions ; Ferrierite ; Hydrogenation reactions ; Metallic surface areas ; Pressure of water ; Zeolites
英文摘要: The catalytic behaviour of a CuZnZr-FER hybrid catalyst was assessed in the direct CO2-to-DME hydrogenation reaction, considering the effects of structural and surface properties induced on the system by homemade ferrierite samples at different acidity and grain size. Notwithstanding a comparable initial activity under the adopted experimental conditions (TR = 220–260 °C; PR = 3.0 MPa; GHSV = 8800 NL/kgcat/h), the investigated catalyst samples exhibited a different behaviour in terms of stability, with a progressive decay with time mostly marked on the hybrid containing ferrierite at larger acidity. Irrespective of the zeolite grain size, TEM analysis showed a low tendency of catalysts to form carbon deposits, while the comparison of surface properties of “fresh” and “used” samples evidenced a significant metal sintering occurring during reaction, proportional to the Si/Al ratio. The loss of metallic surface area was mainly connected to water formation, as proved in the measurements at high contact time in which a larger net drop between initial and final DME yield, resulting from a higher partial pressure of water, was recorded. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111984
Appears in Collections:气候减缓与适应

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作者单位: CNR-ITAE, Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano”, Via S. Lucia Sopra Contesse 5, Messina, 98126, Italy; Università della Calabria, Dip. Ingegneria per l'Ambiente e il Territorio ed Ingegneria Chimica, Via P. Bucci Cubo 42, Rende, 87036 CS, Italy; Università di Messina, Dip. Ing. Elettronica, Chimica ed Ingegneria Industriale and INSTM/CASPE, Lab. of Catalysis for Sustainable Production and Energy, Contrada di Dio I, Messina, 98166, Italy

Recommended Citation:
Bonura G.,Migliori M.,Frusteri L.,et al. Acidity control of zeolite functionality on activity and stability of hybrid catalysts during DME production via CO2 hydrogenation[J]. Journal of CO2 Utilization,2018-01-01,24
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