Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Chiuping Li"'
Publikováno v:
The Canadian Journal of Chemical Engineering. 72:854-861
The effect of the ratio of reactant molecular diameter to catalyst pore diameter (λ) on the restrictive diffusion under hydrodesulfurization (HDS) reactions of heavy residue oils over CoMo/Al2O3 catalysts was investigated. A series of Al2O3 with var
Publikováno v:
Thermochimica Acta. 400:61-67
Precipitated iron oxide samples were characterized using temperature-programmed reduction. H2 was used as the reduction agents. The two-stage reduction was observed: Fe2O3 was reduced to Fe3O4 and then reduced to metallic Fe. The activation energy fo
Autor:
K. R. P. M. Rao, Dragomir B. Bukur, Gerald P. Huffman, Dingjun Wang, Chiuping Li, Michael P. Rosynek, K. Okabe
Publikováno v:
Journal of Catalysis. 155:353-365
A commercial promoted precipitated iron catalyst (100 Fe/5 Cu/4.2 K/25 SiO2 by weight) was characterized after different pretreatment conditions and after Fischer-Tropsch (FT) synthesis in a fixed bed reactor. The BET-N2 surface area and pore volume
Autor:
Yu Wen Chen, Chiuping Li
Publikováno v:
Thermochimica Acta. 256:457-465
Two series of NiO Al 2 O 3 catalysts with various metal loadings were prepared by incipientwetness impregnation and coprecipitation methods. The reducibilities of NiO over these catalysts were investigated by the temperature-programmed reduction (TPR
Publikováno v:
Journal of Non-Crystalline Solids. 185:49-55
This study was carried out to develop a new preparation process for porous alumina-zirconia by the sol-gel method and to examine their porous properties. The gelation of alkoxides by the sol-gel method was for the formation of a precursor composed of
Publikováno v:
Industrial & Engineering Chemistry Research. 34:1126-1131
The effect of matrix on the resistance of vanadium and nickel poisoning of the REY zeolite has been investigated by X-ray diffraction, nitrogen adsorption, and n-hexane cracking reaction. Alumina (Al{sub 2}O{sub 3}), magnesia-alumina (MgO-Al{sub 2}O{
Publikováno v:
Industrial & Engineering Chemistry Research. 34:898-905
The effect of the ratio ({lambda}) of reactant molecular diameter to catalyst pore diameter on the restrictive diffusion under a highly restrictive regime of hydrotreating reactions of heavy residue oils over CoMo/alumina-alumina phosphate catalysts
Publikováno v:
Zeolites. 15:77-82
The interaction of vanadium and nickel in USY zeolite has been investigated by X-ray diffraction, nitrogen sorption, Fourier-transform infrared spectroscopy, temperature-programmed reduction, and n -hexane cracking reaction. There is an interaction e
Publikováno v:
Journal of Sol-Gel Science and Technology. 4:205-215
Two series of Al2O3-ZrO2 powders with various contents of ZrO2 were synthesized by sol-gel (chemical polymerization) and coprecipitation methods. The effect of ZrO2 content and preparation method on the structure and texture of the resultant powders
Publikováno v:
Applied Surface Science. 81:465-468
Coke formation over USY and steamed USY zeolites was investigated by in-situ FTIR spectroscopy, i.e., an IR cell which simultaneously serves as a reactor using n -hexane cracking as a test reaction and which is attached to a gas chromatograph. The ra