Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Pingjun Guo"'
Publikováno v:
Journal of Catalysis. 300:152-162
The deactivation mechanisms of the Au/CeO2 catalyst in steady-state and shutdown/start-up WGS reactions were investigated in realistic reformate at 250 degrees C. Catalyst deactivation due to sintering was excluded. After steady-state operation, the
Publikováno v:
International Journal of Hydrogen Energy. 37:6381-6388
Cu/ZnO catalysts with Cu loadings of 44–5 wt% were prepared by coprecipitation and evaluated in temperature-dependant and shut-down/start-up water–gas shift (WGS) reactions using realistic reformate. These catalysts had similar Cu crystallite siz
Autor:
Hualong Xu, Kangnian Fan, Pingjun Guo, Minghua Qiao, Hui Li, Liang-Feng Chen, Qiuyun Yang, Hexing Li
Publikováno v:
International Journal of Hydrogen Energy. 34:2361-2368
The Cu/ZnO/Al 2 O 3 catalysts were prepared by the coprecipitation method, and were evaluated in the water–gas shift (WGS) reaction. The effects of the calcination temperature on the BET surface area and crystallite size were characterized. In WGS
Publikováno v:
Applied Catalysis A: General. 356:129-136
Mesoporous siliceous SBA-15-supported Cu catalysts have been prepared by different methods and systematically characterized. The results revealed that the incipient wetness impregnation (IWI) method gives poor dispersion of copper species, whereas mu
Publikováno v:
Catalysis Communications. 10:1252-1256
The water–gas shift performances of Cu/ZnO and Cu/ZnO/Al2O3 catalysts in the challenging shut-down/start-up operation were investigated. The Cu/ZnO catalyst showed comparable activity to the Cu/ZnO/Al2O3 catalyst but better stability in shut-down/s
Autor:
Hualong Xu, Kangnian Fan, Hexing Li, Liang-Feng Chen, Minghua Qiao, Wei Shen, Pingjun Guo, Shirun Yan
Publikováno v:
Journal of Catalysis. 257:172-180
Cu/SiO2 catalysts prepared by the ammonia-evaporation (AE) method have been systematically characterized focusing on the effect of the AE temperature during catalyst preparation. It is found that the texture, composition, and structure of the calcine
Autor:
Huarong Hu, Shirun Yan, Baoning Zong, Kangnian Fan, Pingjun Guo, Yan Pei, Minghua Qiao, Xiaoxin Zhang, Xianwen Chu
Publikováno v:
The Journal of Physical Chemistry C. 111:17535-17540
The adsorption and reaction of dipropyl sulfide on Raney Ni and rapidly quenched skeletal Ni (RQ Ni) were studied in ultrahigh vacuum by means of X-ray photoelectron spectroscopy (XPS). Dipropyl sulfide physisorbed on both substrates at 103 K. At 173
Publikováno v:
Journal of Catalysis. 248:303-310
Binary CoB and ternary CoFeB amorphous alloy catalysts with different Fe contents were prepared by the chemical reduction method. In liquid-phase hydrogenation of crotonaldehyde, incorporation of Fe into the CoB catalyst reduced the overall activity
Autor:
Pingjun Guo, Hualong Xu, Shirun Yan, Kangnian Fan, Minghua Qiao, Liang-Feng Chen, Wei-Lin Dai
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 256:164-170
The one-step gas-phase hydrogenolysis of dimethyl maleate to tetrahydrofuran has been investigated over a series of chromium-modified Cu–B/γ-Al2O3 catalysts prepared by the wetness impregnation–chemical reduction method. The characterizations re
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 222:229-234
A colloidal RuB/Al2O3·xH2O catalyst has been synthesized through a combined coprecipitation–crystallization–reduction strategy and characterized in detail with techniques including ICP-AES, N2 physisorption, XRD, TG/DTA, PSD and TEM. The catalyt