Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Clarence D. Chang"'
Autor:
Clarence D. Chang
Publikováno v:
Catalysis and Surface Science ISBN: 9781315138886
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aac5f58f88d428658d845eb44153ddb4
https://doi.org/10.1201/9781315138886-2
https://doi.org/10.1201/9781315138886-2
Publikováno v:
Journal of Catalysis. 196:375-378
Ammonium hexafluorosilicate, (NH4)2SiF6, has been found to be partially selective for removing surface acidity in zeolite ZSM-5. Under static digestion conditions using HZSM-5 extrudate, the zeolite was found to lose approximately 30% of its acid sit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82f940285d81bce2e6f404ddf4826a39
https://doi.org/10.1006/jcat.2000.3037
https://doi.org/10.1006/jcat.2000.3037
Publikováno v:
Inorganica Chimica Acta. 304:297-300
It has been reported that In3+ is isomorphously substituted into the T-atom sites of zeolite ZSM-5 by hydrothermal crystallization in the presence of indium salts. It is reported here that attempts to insert In3+ into the ZSM-5 framework via secondar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e98e5757b50a27c407a2d9f6c9706cc1
https://doi.org/10.1016/s0020-1693(00)00085-2
https://doi.org/10.1016/s0020-1693(00)00085-2
Autor:
Eric G. Derouane, Clarence D. Chang
Publikováno v:
Microporous and Mesoporous Materials. :425-433
An analysis of the heats of adsorption of ammonia and several simple amines on zeolites MOR and MFI, based on recent literature data, shows that these adsorption heats are determined by both chemical (heat of protonation) and physical (confinement) f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7ac110e0fc3ff7bd5657f4190dca646
https://doi.org/10.1016/s1387-1811(99)00239-5
https://doi.org/10.1016/s1387-1811(99)00239-5
Autor:
Nelson Cardona-Martínez, P. Traverso, Scott A. Stevenson, James C. Vartuli, Clarence D. Chang, Jose G. Santiesteban
Publikováno v:
Journal of Catalysis. 187:131-138
Ammonia adsorption microcalorimetry was conducted on various solid acid tungsten/zirconia catalysts prepared by different techniques. The calorimetric data were compared to catalytic test results using n-pentane isomerization as a measure of acid act
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c45831ff23e755c80f12c7b1f6d4a6e
https://doi.org/10.1006/jcat.1999.2595
https://doi.org/10.1006/jcat.1999.2595
Autor:
D.C. Calabro, Y.P. Tsao, M.A. Natal-Santiago, R.D. Bastian, Clarence D. Chang, William S. Borghard, Jose G. Santiesteban, James C. Vartuli
Publikováno v:
Journal of Catalysis. 183:314-322
The Pt-modified WOx/ZrO2catalyst system is found to undergo various transformations in the presence of hydrogen. These transformations include the generation of spillover hydrogen at room temperature, the development of a strong Pt–W interaction at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::025f3c1481509c6038ad7557539e5311
https://doi.org/10.1006/jcat.1999.2435
https://doi.org/10.1006/jcat.1999.2435
Publikováno v:
Journal of Catalysis. 168:431-441
The acid activity of the solid tungsten/zirconia can be affected by the catalyst preparation method. Reflux of the hydrous zirconia prior to tungsten impregnation gives a catalyst with higher surface area than the nonrefluxed material, 62 vs 32 m 2 /
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3d45c97c493138ebb7d8d6d0cede821
https://doi.org/10.1006/jcat.1997.1658
https://doi.org/10.1006/jcat.1997.1658
Publikováno v:
Journal of Catalysis. 161:694-703
High-resolution transmission electron microscopy (HRTEM) has been used to characterize the morphology and the surface structure at an atomic level of sulfated zirconia and sulfate-free zirconia. Our study shows that HRTEM can be used to directly obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c38f3b34c89d62daf2444307d51d3916
https://doi.org/10.1006/jcat.1996.0231
https://doi.org/10.1006/jcat.1996.0231
Autor:
Clarence D. Chang, Anthony S. Fung, George H. Hatzikos, Stephen L. Lawton, Gordon J. Kennedy, Mae K. Rubin, Lawrence B. Alemany, and Stefan Steuernagel, Donald E. Woessner, Hye Kyung Cho Timken, Daria Nowakiwska Lissy
Publikováno v:
The Journal of Physical Chemistry. 100:3788-3798
As-synthesized MCM-49 is a three-dimensional (3D) microporous aluminosilicate zeolite with the MCM-22 framework topology. It is formed hydrothermally in a reaction gel and is the first example of a zeolite with this topology to be produced by direct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b2ecb0f8543311da8a9504ab1eb0ab0
https://doi.org/10.1021/jp952871e
https://doi.org/10.1021/jp952871e
Publikováno v:
Journal of the American Chemical Society. 117:9427-9431
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d251ef35ab74252eaa41f727fc1d376c
https://doi.org/10.1021/ja00142a007
https://doi.org/10.1021/ja00142a007