Surface Reactions of Acetone on Al2O3, TiO2, ZrO2, and CeO2:  IR Spectroscopic Assessment of Impacts of the Surface Acid−Base Properties

Langmuir ◽  
2001 ◽  
Vol 17 (3) ◽  
pp. 768-774 ◽  
Author(s):  
M. I. Zaki ◽  
M. A. Hasan ◽  
L. Pasupulety
Keyword(s):  
Surface Reactions ◽  
Acid Base ◽  
Ir Spectroscopic ◽  
Base Properties

Acid-base properties of modified aluminas

1982 ◽  
Vol 47 (8) ◽  
pp. 2044-2060 ◽  
Author(s):  
E. A. Paukshtis ◽  
P. I. Soltanov ◽  
E. N. Yurchenko ◽  
Květa Jirátová
Keyword(s):  
Carbon Monoxide ◽  
Ir Spectroscopy ◽  
Relative Proportion ◽  
Total Acidity ◽  
Acid Base ◽  
Pure Alumina ◽  
Oh Groups ◽  
Concentration Of Ions ◽  
Ir Spectroscopic ◽  
Base Properties

Acid-base properties of the pure alumina and aluminas modified by addition of various ions were determined by IR spectroscopic and Benesi method. The quality and concentration of OH groups of alumina samples containing SO42-, F-, Cl-, Na+, Zn2+ and Mg2+ ions were determined by IR spectroscopy, Pyridine, benzonitrile and carbon monoxide were used to determine the concentration and strength of aprotic centres and deuteriochloroform was used to determine the concentration and strength of basic centres. The results allowed to evaluate changes in the above properties caused by changes in the concentration of ions in alumina. It was found that the total acidity of modified aluminas determined by Benesi method correlates well with the relative proportion of acidic OH groups in the total spectrum of OH groups.

Probing Acid–Base Properties of Anatase TiO2 Nanoparticles with Dominant {001} and {101} Facets Using Methanol Chemisorption and Surface Reactions

2021 ◽  
Vol 125 (7) ◽  
pp. 3988-4000
Author(s):  
Yiqing Wu ◽  
Feng Gao ◽  
Huamin Wang ◽  
Libor Kovarik ◽  
Berlin Sudduth ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Surface Reactions ◽  
Anatase Tio2 ◽  
Acid Base ◽  
Base Properties

Acid-base properties of 1,3-diphenyl-5-(1H-tetrazol-2-yl)formazan and 1,3-diphenyl-5-(2H-1,2,4-triazol-3-yl)formazan

1982 ◽  
Vol 47 (11) ◽  
pp. 2882-2889
Author(s):  
Nadezhda Likhareva ◽  
Ladislav Šůcha ◽  
Miloslav Suchánek
Keyword(s):  
Computer Program ◽  
Dissociation Constants ◽  
Acid Base ◽  
New Compounds ◽  
Base Properties

Two new compounds from the formazan series, viz. 1,3-diphenyl-5-(1H-tetrazol-2-yl)formazan and 1,3-diphenyl-5-(2H-1,2,4-triazol-3-yl)formazan, were prepared, and the dissociation constants and molar absorptivities of all of their acid-base species were determined spectrophotometrically employing the SPEKTFOT computer program.

Acid-base properties of metals and glasses of Na2O.P2O5-xB2O3 system

1984 ◽  
Vol 49 (10) ◽  
pp. 2355-2362 ◽  
Author(s):  
Juraj Leško ◽  
Marie Dorušková ◽  
Jan Tržil
Keyword(s):  
Boron Oxide ◽  
A Priori ◽  
Optical Basicity ◽  
Galvanic Cell ◽  
Acid Base ◽  
Tetrahedral Configuration ◽  
Relative Basicity ◽  
Base Theory ◽  
Base Properties

Boron oxide in the Na2O.P2O5-x B2O3 system behaves as a Lux base. Its addition to Na2O.P2O5 brings about transformation of a Co(II) indicator from octahedral to tetrahedral configuration, increase in the optical basicity ΛPb(II), increase in the relative basicity of the melt as determined by means of a galvanic cell, and depolymerization reactions releasing PO43- ions. In the Na2O-B2O3 system free of P2O5, boron oxide behaves as a Lux acid. The amphoretic nature of B2O3 is explained in terms of Lux's acid-base theory extended in analogy with the protolysis theory. The theoretical optical basicity values do not indicate the amphoretic behaviour of B2O3 because in this approach boron oxide is a priori regarded as more acidic than Na2O.P2O5.

Acid-base properties and supramolecular structure ofN-[(hydroxymethyl)triazolyl]triflamides: DFT, ab initio, and FTIR study

2016 ◽  
Vol 30 (5) ◽  
pp. e3623 ◽  
Author(s):  
Bagrat A. Shainyan ◽  
Nina N. Chipanina ◽  
Larisa P. Oznobikhina ◽  
Vladimir I. Meshcheryakov
Keyword(s):  
Ab Initio ◽  
Supramolecular Structure ◽  
Acid Base ◽  
Ftir Study ◽  
Base Properties
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