Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Orsina Verdes"'
Publikováno v:
Catalysis Today. 366:123-132
The pure and palladium doped 12-tungstophosphoric acid - H3PW12O40 (HPW) and its cesium salts CsxH3-xPW12O40 (x = 1, 2, 2.25 and 2.5) were prepared and characterized by thermal analysis, FTIR, XRD, BET and XPS methods. In this paper were determined t
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 128:53-69
The dehydration reaction was studied using pure and palladium doped Keggin type heteropoly compounds (H3PW12O40 and Cs2.5H0.5PW12O40) in the temperature range from 433 to 573 K. The structure and texture of catalysts were characterized by thermal ana
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 134:269-279
In this study, the preparation by grafting of amino-functionalized SBA-15 molecular sieves was carried out. Amino-functionalized molecular sieves were synthesized using a silane coupling agent and different types of amination reagents which react wit
Publikováno v:
Catalysis Today. 306:233-242
Some heteropoly salts – mesoporous silica composites were prepared from Co salt of molybdophosphoric acid CoHPMo 12 O 40 (CoHPM) by supporting on mesoporous silica in different concentrations (20–40 wt% CoHPM) of active phase. The acidity of comp
Publikováno v:
Molecules, Vol 29, Iss 13, p 3172 (2024)
The mesoporous silica KIT-6 was synthesized and functionalized with 3-aminopropyltriethoxysilane (APTES) by grafting at 110 °C. The composites were prepared with three different concentrations of APTES: 20, 30 and 40 wt.%. The as-prepared samples we
Externí odkaz:
https://doaj.org/article/8a335aa4ca674fb692546b04d6cb8124
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 127:319-334
A series of heteropolyacids (HPA)–silica composites were prepared from H3PMo12O40 (HPM) and H4PVMo11O40 (HPVM) by chemically anchoring to the amine-functionalized mesoporous MCM-41 and SBA-15. These composites were characterized by FT-IR, XRD, N2 a
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 127:273-282
The calculation of thermal endurance and the estimation of lifetime at certain temperatures based on thermogravimetric data for the tungstophosphoric acid, H3[PW12O40]·H2O (H3PW) and its Cs acidic salts, pure or doped with Pd, were done. The calcula
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 123:557-569
The method for acidity measurement through temperature programmed desorption (TPD) of ammonia was adapted for simultaneous TG/DTG–DTA analysis of the H3[PMo12O40] and its Cs acid salts, in bulk and supported on SBA-15 support. The desorption of NH3
Publikováno v:
Materials Research Bulletin. 50:312-322
The Cs salts of molybdophosphoric acid Cs1H2PMo12O40 (Cs1PM) and Cs3PMo12O40 (Cs3PM), were supported on SBA-15 in the concentration of 20, 30 and 40 wt.% loadings. Because Cs salts are insoluble, the SBA-15 supported Cs-acid salts were prepared by tw
Publikováno v:
Applied Catalysis A: General. 451:50-57
The salts of the H 3 PW 12 O 40 (H 3 PW) with Cs counter cation were prepared and characterized by thermal analysis, IR, XRD, BET, XPS LEIS and SEM methods. The samples are denoted as Cs x H 3 − x PW 12 O 40 ( x = 1, 2, 2.25, 2.5 and 3). The cataly