Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Keiko A. Koyano"'
Publikováno v:
In Studies in Surface Science and Catalysis 1999 121:221-226
Publikováno v:
Applied Catalysis A: General. 200:125-134
Titanium silicate-1 (TS-1) samples contained a significant amount of potassium derived from contaminants in an aqueous solution of Pr4NOH. By washing with H2SO4, the alkali-exchanged sites were converted to sites with two OH groups or ‘closed’ Ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::524d68772f600fc30197144074427b25
https://doi.org/10.1016/s0926-860x(00)00630-x
https://doi.org/10.1016/s0926-860x(00)00630-x
Publikováno v:
Journal of Porous Materials. 6:13-17
The structural collapse of mesoporous molecular sieves, MCM-48 and MCM-41 materials by mechanical compression was found to occur mechanochemically through hydrolysis of Si–O–Si bonds. Their ordered structures were retained by compressing the well
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::559e935de8cd64f8dca249c5977320a2
https://doi.org/10.1023/a:1009682915127
https://doi.org/10.1023/a:1009682915127
Autor:
Yuichi Ichihashi, Takashi Tatsumi, Shu Gou Zhang, Masakazu Anpo, Dal Ryung Park, Yo Fujii, Keiko A. Koyano, Hiromi Yamashita, Keita Ikeue
Publikováno v:
Catalysis Today. 45:221-227
Highly dispersed titanium oxide catalysts have been prepared within zeolite cavities as well as in the zeolite framework and utilized as photocatalysts for the reduction of CO 2 with H 2 O to produce CH 4 and CH 3 OH at 328 K. In situ photoluminescen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddb069d3ef552a979a96ca3c31f4634a
https://doi.org/10.1016/s0920-5861(98)00219-3
https://doi.org/10.1016/s0920-5861(98)00219-3
Autor:
Hiromi Yamashita, Takashi Tatsumi, Keiko A. Koyano, Shu Guo Zhang, Dal Ryung Park, Yasuo Suzuki, Masakazu Anpo, Keita Ikeue, Yuichi Ichihashi, Yo Fujii
Publikováno v:
Catalysis Today. 44:327-332
Titanium oxide species included within the framework of mesoporous zeolites (Ti-MCM-41 and Ti-MCM-48) prepared by a hydrothermal synthesis exhibited high and unique photocatalytic reactivity for the reduction of CO2 with H2O at 328 K to produce CH4 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51950d426791b26a185613b6f4e91719
https://doi.org/10.1016/s0920-5861(98)00206-5
https://doi.org/10.1016/s0920-5861(98)00206-5
Publikováno v:
Macromolecular Rapid Communications. 18:991-996
Free radical polymerization of methyl methacrylate (MMA) within the uniform channels of the mesoporous zeolite MCM-41 proceeds at 100°C to give a high molecular weight polymer (PMMA). The formation of long-living propagating polymer-radicals is obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e84b072c06787f6cacf61c49f917d451
https://doi.org/10.1002/marc.1997.030181201
https://doi.org/10.1002/marc.1997.030181201
Publikováno v:
The Journal of Physical Chemistry B. 101:9436-9440
The stability of Si-MCM-48 to moisture and compression can be improved by trimethylsilylation, as a result of the increase in hydrophobicity. Moreover, the stability is retained after calcination, although the calcined material is no longer hydrophob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44c068eb17ad92aead2ae7873f4a1439
https://doi.org/10.1021/jp9724941
https://doi.org/10.1021/jp9724941
Autor:
Keiko A. Koyano, Takashi Tatsumi
Publikováno v:
ChemInform. 27
A titanium-containing mesoporous material with a cubic structure, Ti-MCM-48, is synthesized by a two-stage hydrolysis method using tetraethylorthosilicate and tetrabutylorthotitanate and found to be more active than Ti-MCM-41 in the epoxidation of bu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61cfe9b256d0680f89b8c8575f4356c1
https://doi.org/10.1002/chin.199620230
https://doi.org/10.1002/chin.199620230
Publikováno v:
ChemInform. 29
Titanium-containing mesoporous materials, Ti-MCM-41 and Ti-MCM-48, have been successfully modified by trimethylsilylation to exhibit enhanced catalytic activity in the oxidation of alkenes and alkanes with H2O2.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::226134ef59542bfbdbcc57a9c3512be6
https://doi.org/10.1002/chin.199820078
https://doi.org/10.1002/chin.199820078
