Zobrazeno 1 - 10
of 13
pro vyhledávání: '"B. E. Spiewak"'
Publikováno v:
Catalysis Today. 53:395-406
Results of reaction kinetic, microcalorimetric, spectroscopic, and quantum chemical studies are combined to develop a quantitative description of ethane hydrogenolysis over platinum. This work builds on investigations by John H. Sinfelt and co-worker
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ad54b8ae8de24f7613126c1371283b4
https://doi.org/10.1016/s0920-5861(99)00133-9
https://doi.org/10.1016/s0920-5861(99)00133-9
Publikováno v:
Journal of Catalysis. 180:184-193
Quantum chemical calculations were performed using density functional theory to study interactions of C1and C2hydrocarbons with 10-atom Pt clusters. The heats of ethylene adsorption to form di-σ- and π-adsorbed species were calculated to be −171
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c94e3e6037923a829b19debb3b6c2c4
https://doi.org/10.1006/jcat.1998.2288
https://doi.org/10.1006/jcat.1998.2288
Publikováno v:
Journal of Catalysis. 176:405-414
Microcalorimetric measurements of C 2 H 4 adsorption on Pt powder at 303 and 173 K gave initial heats of 160 and 120 kJ/mol, which correspond to formation of ethylidyne species plus atomic hydrogen and to molecularly bonded C 2 H 4 species, respectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad481c090c0769c3b406428c64051cb0
https://doi.org/10.1006/jcat.1998.2047
https://doi.org/10.1006/jcat.1998.2047
Autor:
James A. Dumesic, B. E. Spiewak
Publikováno v:
Thermochimica Acta. 312:95-104
Microcalorimetry is a useful tool for studies of heterogeneous catalysts, because it provides a direct measurement of the strength with which molecules interact with solid surfaces. The following communication reviews adsorption microcalorimetric stu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8df3c63c0842a9e5a89c33200a18a52
https://doi.org/10.1016/s0040-6031(97)00443-7
https://doi.org/10.1016/s0040-6031(97)00443-7
Publikováno v:
Catalysis Letters. 51:139-147
Microcalorimetric measurements were conducted at 573 K of CO adsorption on Pt clusters supported in L-zeolite. The measured heat of CO adsorption is 175 kJ/mol, and the heat decreases to 90 kJ/mol near saturation coverage. Quantum chemical calculatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3429065cbeec617a73e41067e5c7ae7d
https://doi.org/10.1023/a:1019038512945
https://doi.org/10.1023/a:1019038512945
Publikováno v:
Langmuir. 13:2735-2739
Nickel powder, and nickel boride (Ni-B) and nickel phosphide (Ni-P) alloy particles prepared by aqueous chemical reduction, were studied by microcalorimetry. Treatment of Ni powder, Ni-B, and Ni-P in H2 at 623 K was sufficient to produce reduced nick
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::002279ef80d647bcbee705f5c2fbb38b
https://doi.org/10.1021/la960858v
https://doi.org/10.1021/la960858v
Autor:
James A. Dumesic, B. E. Spiewak
Publikováno v:
Thermochimica Acta. 290:43-53
Techniques are presented for measurement of differential heats of adsorption on reactive catalyst surfaces using heat-flux calorimetry. Samples are prepared ex-situ in ultra-pure flowing gases and then sealed in Pyrex capsules. Special calorimetric c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b997d3c6d20952016b08f75b47c15d60
https://doi.org/10.1016/s0040-6031(96)03056-0
https://doi.org/10.1016/s0040-6031(96)03056-0
Publikováno v:
The Journal of Physical Chemistry. 100:17260-17265
Microcalorimetric measurements of CO adsorption at 403 K on reduced Pt powder gave an initial heat of 140 kJ/mol and a saturation CO coverage of 30 μmol/g Pt. The addition of metallic Rb and Cs to Pt increased the initial heats of CO adsorption by 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c2c8626549ad942bc1651f8c18c680e
https://doi.org/10.1021/jp961493q
https://doi.org/10.1021/jp961493q
Publikováno v:
The Journal of Physical Chemistry. 99:17640-17644
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4562d3435ca414fbc9ee9acc4d22b825
https://doi.org/10.1021/j100049a026
https://doi.org/10.1021/j100049a026
Publikováno v:
Catalysis Letters. 23:207-213
The acidities ofγ-Al2O3, HNa-Y zeolite, and H-mordenite have been examined by microcalorimetric measurements of ammonia adsorption at 423 K. The differential heat of adsorption on γ-Al2O3 decreases continuously with ammonia coverage from an initial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df1e4864265d6eb1678c5136d9662f4f
https://doi.org/10.1007/bf00811355
https://doi.org/10.1007/bf00811355