Zobrazeno 1 - 10
of 133
pro vyhledávání: '"James A. Guin"'
Autor:
Mohindar S. Seehra, James A. Guin, Ayyakkannu Manivannan, Prakash M. Adekkanattu, Prasanta Dutta
Publikováno v:
Catalysis Letters. 94:181-185
A method to determine the electronic state and concentration of Ni in Ni-loaded silicoaluminophosphate (NiSAPO-n) where n denotes the structure type (n=47, 18, 34, 44, 56and 17) is presented. The method involves measurements and analysis of the magne
Autor:
Alex Punnoose, Jing Liu, James A. Guin, Delphine R. Dubois, Prakash M. Adekkanattu, Daniel L. Obrzut, Mohindar S. Seehra, Jyothi Thundimadathil
Publikováno v:
Fuel Processing Technology. 83:203-218
Silicoaluminophosphate (SAPO)-34 molecular sieves modified with transition metals Co, Mn, and Ni were investigated for their activity, selectivity, and lifetime in the methanol to olefins (MTO) reaction and compared with that of unmodified SAPO-34. T
Autor:
Daniel L. Obrzut, Jyothi Thundimadathil, James A. Guin, Prakash M. Adekkanattu, Delphine R. Dubois, Jing Liu
Publikováno v:
Reaction Kinetics and Catalysis Letters. 80:113-121
SAPO-34 silicoaluminophosphate molecular sieve produces large amounts of methane at elevated temperatures in the methanol to olefins (MTO) process. This significantly reduces the lower olefins selectivity a key factor in determining the commercial vi
Autor:
James A. Guin, Shaobin Wang
Publikováno v:
Reaction Kinetics and Catalysis Letters. 75:169-175
Etherification of a typical C6 olefin, 2,3-dimethyl-1-butene, with methanol was investigated over commercial ion-exchange resins and several clay-based acid solids prepared by sulfuric acid treatment or impregnation of sulfated zirconia and Nafion. T
Publikováno v:
ResearcherID
Oxygenated compounds such as ethers produced by the reaction of alcohols and alkenes have good potential for use as performance and environmental enhancing additives for transportation fuels. In this study, the production of the C7 ether, 2,3-dimethy
Autor:
James A. Guin, H.S. Joo
Publikováno v:
Fuel Processing Technology. 57:25-40
A residual liquid from plastics pyrolysis was upgraded to a gasoline range product using a three-step sequential process consisting of hydrotreating, hydrocracking and distillation. Two sequences of treatments were performed in nominal 100-h continuo
Autor:
James A. Guin, Xiaofeng Yang
Publikováno v:
Chemical Engineering Communications. 166:57-79
In this work, hindered diffusion of one coal and two petroleum asphaltenes was studied by adsorptive uptake in THF from a bath surrounding a NiMo/Al2O3 catalyst. A mathematical model for the adsorption-diffusion of asphaltenes was developed. The mode
Autor:
James A. Guin, H.S. Joo
Publikováno v:
Energy & Fuels. 11:586-592
Pyrolysis of waste plastics is one method currently being investigated as an alternative to landfill disposal of this increasingly large waste stream. Although the pyrolysis process produces signif...
Autor:
James A. Guin, Xiaofeng Yang
Publikováno v:
Chemical Engineering Communications. 154:101-118
This work investigates the effects of solute adsorption on hindered diffusion behavior in porous catalysts. A mathematical model describing the adsorptive diffusion process is developed. The model, termed the shrinking pore model, incorporates the lo
Autor:
James A. Guin, H.S. Joo
Publikováno v:
Fuel Processing Technology. 49:137-155
An important step in the upgrading of coal and coal-waste coprocessing liquids is the removal of heteroatoms, particularly nitrogen, which tend to poison the downstream cracking operations required to lower boiling points to the transportation fuels