Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ravindra S. Dixit"'
Autor:
Ravindra S. Dixit, David S. Sholl, Yujun Liu, Wun-gwi Kim, Christopher W. Jones, Carsten Sievers, Jungseob So, Sankar Nair, Seung-Won Choi
Publikováno v:
Chemistry of Materials. 29:7213-7222
We report the synthesis, characterization, and enhanced propane dehydrogenation properties of hierarchical Ga-MFI zeolite catalysts synthesized by two different methods: (i) repetitive branching and (ii) utilization of a long chain alkyl SDA. Structu
Autor:
Yujun Liu, Ravindra S. Dixit, Jungseob So, Christopher W. Jones, Michele L. Sarazen, Sankar Nair, Wun-gwi Kim, Shuai Tan, Taylor P. Sulmonetti, Bo Hu
Publikováno v:
ChemCatChem. 9:3330-3337
A mesoporous CoAl2O4 spinel (Co-Al) is synthesized by a one-step evaporation induced self-assembly (EISA) method. N2 physisorption and transmission electron microscopy (TEM) analysis demonstrate the presence of mesopores within the Co-Al material. Th
Modeling and process simulation of hollow fiber membrane reactor systems for propane dehydrogenation
Autor:
Seung-Won Choi, David S. Sholl, Sankar Nair, John G. Pendergast, Yujun Liu, Jason S. Moore, Ravindra S. Dixit
Publikováno v:
AIChE Journal. 63:4519-4531
We report a detailed modeling analysis of membrane reactor systems for propane dehydrogenation (PDH), by integrating a two-dimensional (2-D) nonisothermal model of a packed bed membrane reactor (PBMR) with ASPEN process simulations for the overall PD
Autor:
Jason S. Moore, David S. Sholl, Seung-Won Choi, John G. Pendergast, Yujun Liu, Wun-gwi Kim, Carsten Sievers, Jungseob So, Sankar Nair, Ravindra S. Dixit, Christopher W. Jones
Publikováno v:
Journal of Catalysis. 345:113-123
The propane dehydrogenation (PDH) behavior of gallosilicate MFI catalysts synthesized in the presence of 3-mercaptopropyl-trimethoxysilane (MPS) is investigated. MPS addition to the zeolite synthesis gel results in gallosilicate molecular sieves with
Autor:
John G. Pendergast, David S. Sholl, Seok-Jhin Kim, Karren L. More, Yujun Liu, Christopher W. Jones, Laura Briones Gil, Shuai Tan, Ravindra S. Dixit, Jason S. Moore, Micaela Taborga Claure, Sankar Nair
Publikováno v:
ACS Applied Materials & Interfaces. 8:24671-24681
Metal-loaded zeolitic membranes are promising candidates as catalytic membrane reactors. We report a one-step synthesis method to synthesize zeolite membranes containing metal nanoclusters, that has advantages in comparison to multistep methods such
Autor:
David S. Sholl, Bo Hu, Jason S. Moore, Shuai Tan, Simon H. Pang, Sankar Nair, Christopher W. Jones, Wun-gwi Kim, John G. Pendergast, Ravindra S. Dixit, Yujun Liu
Publikováno v:
ACS Catalysis. 6:5673-5683
A series of alumina-supported Fe-based catalysts is prepared via a dry impregnation method in the presence of a phosphorus source (phosphate salt) and then used for the catalytic dehydrogenation of propane. Specifically, supported catalysts with Fe:P
Autor:
Christopher W. Jones, John G. Pendergast, David S. Sholl, Yujun Liu, Jason S. Moore, Ravindra S. Dixit, Sankar Nair, Seok-Jhin Kim
Publikováno v:
Chemistry of Materials. 28:4397-4402
We demonstrate significantly enhanced conversion and selectivity in high-temperature propane dehydrogenation (PDH) membrane reactors via the synthesis and use of small-pore SAPO-34 zeolite membranes. The reduction of SAPO-34 membrane thickness to ∼
Autor:
Yujun Liu, Jason S. Moore, Sankar Nair, Seok-Jhin Kim, Shuai Tan, John G. Pendergast, Christopher W. Jones, David S. Sholl, Ravindra S. Dixit
Publikováno v:
ChemCatChem. 8:214-221
A series of ternary mixed metal oxides containing Group III A elements (In, Ga, Al) is prepared by means of an alcoholic co-precipitation method. Specifically, oxide catalysts with a molar composition of In/Ga/Al=5:15:80, 10:10:80, and 15:5:80 are re
Autor:
Yujun Liu, Christopher W. Jones, Seok-Jhin Kim, Jason S. Moore, Sagar Sarsani, John G. Pendergast, Ravindra S. Dixit, Sankar Nair
Publikováno v:
Microporous and Mesoporous Materials. 203:170-177
Ion exchange of nanoporous (e.g., zeolite) membranes is of increasing importance in their applications as separation devices and catalytic reactors. Ion exchange processes in zeolite membranes are significantly limited by slow hydrated-ion transport
Autor:
David S. Sholl, Seung-Won Choi, Yujun Liu, Christopher W. Jones, Sankar Nair, Ravindra S. Dixit, John G. Pendergast, Jason S. Moore
Publikováno v:
AIChE Journal. 61:922-935
A modeling-based approach is presented to understand physically realistic and technologically interesting material properties and operating configurations of packed-bed membrane reactors (PBMRs) for propane dehydrogenation (PDH). PBMRs composed of mi