Catalytic Activity of Ni/(P)Ti-HMS Catalysts with Varying Phosphorous Concentration in The reaction Of dehydrogenation of Cyclohexane

1998 ◽  
Vol 549 ◽  
Author(s):  
T. Halachev ◽  
T. Viveros ◽  
G. Perez ◽  
L. Dimitrov
Keyword(s):  
Catalytic Activity ◽  
Surface Properties ◽  
Mesoporous Materials ◽  
Acid Base ◽  
Base Surface ◽  
Cyclohexane Dehydrogenation ◽  
Dehydrogenation Of Cyclohexane ◽  
Phosphorous Concentration

AbstractNi/(P)Ti-HMS catalysts were prepared and characterized by several physicochernical techniques. The addition of phosphorous to the original mesoporous materials modified the acid-base surface properties. The activity in cyclohexane dehydrogenation is higher than on conventional catalysts.

Formation and Acid–Base Surface Properties of Highly Dispersed η-Al2O3 Nanopowders

2018 ◽  
Vol 54 (4) ◽  
pp. 392-400 ◽  
Author(s):  
N. E. Kotlovanova ◽  
A. N. Matveeva ◽  
Sh. O. Omarov ◽  
V. V. Sokolov ◽  
D. N. Akbaeva ◽  
...  
Keyword(s):  
Surface Properties ◽  
Acid Base ◽  
Base Surface ◽  
Highly Dispersed

Study of acid-base surface properties of pyrogenic γ-aluminium oxide

1995 ◽  
Vol 105 (2-3) ◽  
pp. 167-172 ◽  
Author(s):  
L.F Sharanda ◽  
A.P Shimansky ◽  
T.V Kulik ◽  
A.A Chuiko
Keyword(s):  
Surface Properties ◽  
Aluminium Oxide ◽  
Acid Base ◽  
Base Surface

Study of the effect of the acid-base surface properties of ZnO, Fe2O3 and ZnFe2O4 oxides on their gas sensitivity to ethanol vapor

2013 ◽  
Vol 47 (8) ◽  
pp. 1026-1030 ◽  
Author(s):  
S. S. Karpova ◽  
V. A. Moshnikov ◽  
A. I. Maksimov ◽  
S. V. Mjakin ◽  
N. E. Kazantseva
Keyword(s):  
Surface Properties ◽  
Ethanol Vapor ◽  
Acid Base ◽  
Gas Sensitivity ◽  
Base Surface

scholarly journals Acid-basic surface properties of clay disperse fillers

2018 ◽  
Vol 230 ◽  
pp. 03004
Author(s):  
Yuliya Danchenko ◽  
Vladimir Andronov ◽  
Viktor Sopov ◽  
Igor Khmyrov ◽  
Anton Khryapynskyy
Keyword(s):  
Surface Layer ◽  
Surface Properties ◽  
Mineral Composition ◽  
Chemical Nature ◽  
Bentonite Clay ◽  
Acid Base ◽  
Active Centers ◽  
Base Surface ◽  
Kaolinite Clay ◽  
Disperse Fillers

The mineral composition, surface morphology, dispersion and specific surface of dispersed clay fillers of various chemical nature have been experimentally determined. As materials for research used clay mineral disperse fillers of various chemical and mineral composition: bentonite clay, kaolinite clay and diabase flour. Using the thermogravimetric (TG) analysis and the differential thermal analysis (DTA), the structure of the hydroxyl-hydrated surface layer of the filler surface has been studied. The amount and acidity of the surface active centers of clay fillers have been investigated using pK-metric and pH-metric methods. It was established that the mineral composition is the determining factor in the acid-base surface properties of clay fillers. The thickness of the hydroxyl-hydrated surface layer affects the acidity of the surface, at certain large sizes. It has been shown that clay fillers, which include montmorillonite as the dominant minerals, are characterized by higher acidity than the fillers that consist of kaolinite. In the mixed clay fillers, the acid-base properties of the surface depend on the chemical nature of the impurities and related minerals.

Acid–base surface properties of glass-ionomers determined by IGC

2005 ◽  
Vol 245 (1-4) ◽  
pp. 149-154 ◽  
Author(s):  
A. Voelkel ◽  
E. Andrzejewska ◽  
H. Limanowska-Shaw ◽  
M. Andrzejewski
Keyword(s):  
Surface Properties ◽  
Acid Base ◽  
Base Surface

Modeling the Acid–Base Surface Properties of Aquatic Sediments

2009 ◽  
Vol 16 (2) ◽  
pp. 279-291 ◽  
Author(s):  
L. Borgnino ◽  
M. G. Garcia ◽  
M. V. del Hidalgo ◽  
M. Avena ◽  
C. P. De Pauli ◽  
...  
Keyword(s):  
Surface Properties ◽  
Acid Base ◽  
Aquatic Sediments ◽  
Base Surface

Evaluation of the acid–base surface properties of nanoscale Fe3O4 and Fe3O4/SiO2 by potentiometric method

2021 ◽  
Vol 719 (1) ◽  
pp. 140-152
Author(s):  
N. V. Kusyak ◽  
А. P. Kusyak ◽  
K. P. Svyrydiuk ◽  
A. L. Petranovska ◽  
P. P. Gorbyk
Keyword(s):  
Surface Properties ◽  
Potentiometric Method ◽  
Acid Base ◽  
Base Surface
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