Zobrazeno 1 - 10
of 45
pro vyhledávání: '"M Vaarkamp"'
Publikováno v:
Journal of physical chemistry, 99(43), 16067. American Chemical Society
The structure and electronic properties of platinum in WH-LTL after reduction at 300 'C and heating in helium to 500 or 690 'C were determined using X-ray absorption and infrared spectroscopy. After reduction at 300 'C, the platinum particles were me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9469fde3104f11b8bfc5a70091405947
https://doi.org/10.1021/j100043a055
https://doi.org/10.1021/j100043a055
Autor:
M Vaarkamp, DC Diek Koningsberger
Publikováno v:
Physica B, condensed matter, 208-209(1-4), 633. Elsevier
The structure of the metal particles and the metal-support interface of a Pt@c-Al{2}O{3} catalyst was determined by EXAFS after low temperature reduction (LTR: 300}o{ C) and high temperature reduction (HTR: 450}o{ C). The clusters have excellent ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e95a7da1ad1aa0a6ba9544e0f42872a
https://doi.org/10.1016/0921-4526(94)00776-r
https://doi.org/10.1016/0921-4526(94)00776-r
Autor:
M Vaarkamp, van J Joop Grondelle, P Dijkstra, Jeffrey T. Miller, van Ra Rutger Santen, FS Modica, DC Diek Koningsberger
Publikováno v:
Journal of catalysis, 151(2), 330. Elsevier
Journal of Catalysis, 151(2), 330-337. Academic Press Inc.
Journal of Catalysis, 151(2), 330-337. Academic Press Inc.
The ring opening of methylcyclopentane (MCP) over well-characterized Pt/SiO{2}(EUROPT-1), Pt/@c-Al{2}O{3}, and Pt/K-LTL catalysts was studied as a function of hydrogen partial pressure and reduction temperature. The MCP ring opening selectivity did n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5036b044c4ee52205b37c93fb7b1713
https://doi.org/10.1006/jcat.1995.1035
https://doi.org/10.1006/jcat.1995.1035
Publikováno v:
Physical review. B, condensed matter, 50(11), 7872. American Physical Society
Single-scattering calculations of extended x-ray-absorption fine-structure (EXAFS) amplitude and phase were compared with the experimental first-shell data for copper, rhodium, and platinum metal. Theoretical standards used were the tables of Teo and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cf9f13bf344ada9f43cfd1d8219766c
https://doi.org/10.1103/physrevb.50.7872
https://doi.org/10.1103/physrevb.50.7872
Publikováno v:
Journal of catalysis, 144(2), 611. Elsevier
Journal of Catalysis, 144(2), 611-626. Academic Press Inc.
Journal of Catalysis, 144(2), 611-626. Academic Press Inc.
Platinum supported on H-LTL, K-LTL, and H-MAZ was reduced at temperatures from 573 to 873 K and the structure of the metal-support interface was determined by EXAFS. In all samples, the platinum was highly dispersed, with metal particle sizes from 5-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::899853f3cdf8e77810a980116f64a884
https://doi.org/10.1006/jcat.1993.1357
https://doi.org/10.1006/jcat.1993.1357
Publikováno v:
Journal of Catalysis, 143(2), 395-408. Academic Press Inc.
Journal of catalysis, 143(2), 395. Elsevier
Journal of catalysis, 143(2), 395. Elsevier
Hydrogen temperature-programmed desorption (TPD) of supported platinum catalysts, Pt/KLTL, Pt/H-LTL, Pt/K-MAZ, Pt/H-MAZ, Pt/γ-Al 2 O 3 , and Pt/SiO 2 , was performed after hydrogen reduction at 300, 450, or 650°C. For all catalysts, reversible deso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c39b128f3d94ec07272515fc36ee535f
https://doi.org/10.1006/jcat.1993.1285
https://doi.org/10.1006/jcat.1993.1285
Publikováno v:
Journal of Catalysis. 138:675-685
The sulfur poisoning of a Pt/BaK-LTL catalyst has been studied with X-ray absorption spectroscopy and hydrogen chemisorption. The fresh catalyst contained highly dispersed platinum inside the zeolite pores. EXAFS analysis determined a Pt-Pt coordinat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99ed958e731bea517d7725593d9e558a
https://doi.org/10.1016/0021-9517(92)90315-9
https://doi.org/10.1016/0021-9517(92)90315-9
Publikováno v:
Journal of Catalysis. 127:51-66
The effects of zeolite structure, acid site density, and reaction temperature on the mode of n-hexane cracking have been studied. The results can be consistently explained in terms of the occurrence of two different cracking routes, viz. the classica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::207760d331a143f468c66080a6db0251
https://doi.org/10.1016/0021-9517(91)90208-l
https://doi.org/10.1016/0021-9517(91)90208-l
Autor:
Helmut Knözinger, M. Vaarkamp, G. Mestl, G. Engelhardt, J.W. Niemantsverdriet, P. Gallezot, K. S. W. Singh, T. Butz, G. Bergeret, Abhaya K. Datye, D. C. Koningsberger, J. Rouquerol, H. Jobic
Publikováno v:
Handbook of Heterogeneous Catalysis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7038db4f6237ab267cc349632a6d5ff5
https://doi.org/10.1002/9783527619474.ch3a
https://doi.org/10.1002/9783527619474.ch3a
Publikováno v:
Journal of Catalysis, 163(2), 294-305. Academic Press Inc.
Journal of catalysis, 163(2), 294. Elsevier
Journal of catalysis, 163(2), 294. Elsevier
The relation between the catalytic activity, electronic properties, morphology, and structure of the metal-support interface was studied for Pt/@c-Al{2}O{3}after low (300}o{C, LTR) and high temperature reduction (450}o{C, HTR). EXAFS revealed that af
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::413f1b556d0cec62ce8581379add636d
https://research.tue.nl/nl/publications/e3fd6dbf-b60a-48ba-9738-87176b93e4f8
https://research.tue.nl/nl/publications/e3fd6dbf-b60a-48ba-9738-87176b93e4f8