Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Dimitar Klissurski"'
Autor:
Dimitar Klissurski, Danail B. Simeonov, Nadejda Kirova, Ani Kojuharova, Yanka Popova, Liubomir Spasov
Publikováno v:
Journal of Chemical Technology & Biotechnology. 42:95-104
The properties of glucose oxidase (EC1134) embedded in silica gel were investigated. The immobilized preparations retained 62% of the activity of the mobilized enzyme. The optimum pH value (5.8) and temperature (30°C) were the same for the immobiliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec02059dcb4938b99581b1822da7d086
https://doi.org/10.1002/jctb.280420203
https://doi.org/10.1002/jctb.280420203
Publikováno v:
The Journal of Physical Chemistry C. 111:1101-1104
The possibilities of mechanochemical activation as a successful route for direct synthesis of NiWO4 have been studied. A stoichiometric mixture of NiO and WO3 in a 1:1 molar ratio was subjected to intense mechanical treatment in air using a planetary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e97e58ac6efc70cc5664e755445d73f4
https://doi.org/10.1021/jp065071k
https://doi.org/10.1021/jp065071k
Publikováno v:
Journal of Alloys and Compounds. 422:53-57
The aim of this study is to establish the possibilities of mechanochemical activation as a successful route for the preparation of NiMoO 4 catalysts. A stoichiometric mixture of NiO and MoO 3 in a 1:1 molar ratio was subjected to intense mechanical t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::192262a55753b999e97b2d6b0b55642c
https://doi.org/10.1016/j.jallcom.2005.11.073
https://doi.org/10.1016/j.jallcom.2005.11.073
Autor:
Dimitar Klissurski, Elena Ivanova, Helmut Knözinger, Konstantin Hadjiivanov, Kristina Chakarova
Publikováno v:
Phys. Chem. Chem. Phys.. :3702-3709
Low temperature CO adsorption on a Pd-H-ZSM-5 sample results in formation of Pd3+(CO)2 species (2221 and 2200 cm−1). The dicarbonyl structure has been proven by coadsorption of 12CO and 13CO: mixed Pd3+(13CO)(12CO) species absorb at 2210 and 2158 c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::189d765999c11f291e51913562aba537
https://doi.org/10.1039/b401934b
https://doi.org/10.1039/b401934b
Autor:
Ellie L. Uzunova, Dimitar Klissurski
Publikováno v:
Applied Surface Science. 214:370-374
Cobalt–manganese binary spinel oxides of high-dispersity are synthesized by thermal decomposition of hydroxycarbonate precursors in the limits 0.33≤Mn/Co≤2. The mixed oxides are cation-deficient and contain a high surface concentration of non-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dd8b39cc5f7137aa3fac61a33b76692
https://doi.org/10.1016/s0169-4332(03)00524-5
https://doi.org/10.1016/s0169-4332(03)00524-5
Autor:
Boyko Tsyntsarski, Konstantin Hadjiivanov, Jean-Claude Lavalley, Dimitar Klissurski, J. Saussey, Tz. Venkov, Marco Daturi
Publikováno v:
Physical Chemistry Chemical Physics. 5:1695-1702
CO adsorption on Co–ZSM-5 results in formation of two kinds of Co2+–CO species characterized by bands at 2217 and 2207 cm−1, respectively. The species are highly resistant towards evacuation at ambient temperature. When CO adsorption is perform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12ef6ec872d5a87805f6e38989bea830
https://doi.org/10.1039/b300844d
https://doi.org/10.1039/b300844d
Publikováno v:
Langmuir. 19:3323-3332
Adsorption of CO on Cu/ZrO2 leads to the formation of Cu+−CO (2126 cm-1) and Zr4+−CO (2192 cm-1) carbonyls and of carbonato−hydrogen-carbonate structures (bands in the 1650−1000 cm-1 region). Adsorption of NO on the same sample produces bands
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::996ba4ffa6f566300b88708352fd4595
https://doi.org/10.1021/la026655q
https://doi.org/10.1021/la026655q
Autor:
Ts. Marinova, B. Tsyntsarski, Konstantin Hadjiivanov, Hristo Kolev, Dimitar Klissurski, V. Avreyska
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 193:139-149
Infrared spectroscopy has been applied to the study of NO adsorption, NO+O 2 coadsorption and interaction of surface nitrates with methane on four samples: ZrO 2 , SO 4 2− –ZrO 2 , Co/ZrO 2 and Co/SO 4 2− –ZrO 2 . Adsorption of NO on zirconia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa8a20e2a1b6d3a17e1d8fe8c97a6bf0
https://doi.org/10.1016/s1381-1169(02)00422-3
https://doi.org/10.1016/s1381-1169(02)00422-3
Autor:
Konstantin Hadjiivanov, Elena Ivanova, Dimitar Klissurski, Lubomir Dimitrov, Margarita Kantcheva, Helmut Knözinger, Erkan Z. Ciftlikli
Publikováno v:
Catalysis Communications
Adsorption of CO on Mn-ZSM-5 zeolite at 85 K results in formation of physically adsorbed CO, several kinds of H-bonded CO and Mn2+ (CO)(x) geminal species (2202 cm(-1)). Decreasing the coverage during evacuation results in disappearance of the physic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc36b87e84ed490fdbce9272a3505c87
https://doi.org/10.1016/s1566-7367(02)00140-1
https://doi.org/10.1016/s1566-7367(02)00140-1
Publikováno v:
Physical Chemistry Chemical Physics. 4:2443-2448
Adsorption of NO on Al2O3 leads to the formation of small amounts of surface nitro–nitrito (1461, 1318, 1228, 1220 and 1074 cm−1) and nitrato (1652 cm−1) complexes. Introduction of oxygen into the system causes oxidation of the NO2− compounds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22a37bac5072d1c2d8f8f285b6381d54
https://doi.org/10.1039/b111396h
https://doi.org/10.1039/b111396h