-
Article
Influence of the Kind of the Tin Precursor on the Properties of Pt/Sn–Al2O3–Cl Heptane Reforming Catalysts
The influence exerted by the kind of the tin precursor [SnCl4·5H2O or H2Sn(OH)6] and by the Cl– content (0.86–0.97 wt %) on the adsorption and catalytic properties of Pt sites in Pt/Sn–Al2O3–Cl heptane reforming ...
-
Article
Effect of the Indium Introduction Method on the Properties of the Pt/In/Al2O3–Cl Reforming Catalysts
The effect of 0.3 wt % of indium introduced at the peptization and aluminum oxide impregnation stages on the properties of alumina-platinum reforming catalysts has been studied. Modification with indium at th...
-
Article
Catalytic properties of the platinum catalyst supported on alumina modified by oxalic acid in n-heptane reforming
Structural modification of alumina was carried out by the decomposition of the products of the reaction of aluminum hydroxide with the organic acid used simultaneously as a peptizer and a “burnable” additive. ...
-
Article
Characterization of Acid-Modified Alumina as a Support for Reforming Catalysts
The textural and acid–base characteristics of initial alumina and alumina modified with acetic acid at different concentrations (from 0.83 to 17.4 mol/L) were studied. It was found that treatment with acetic a...
-
Article
Trimetallic Pt–Sn–Zr/γ-Al2O3 Naphtha-Reforming Catalysts
The adsorption and catalytic characteristics of Pt/Al2O3 catalysts modified with Sn and/or Zr compounds (the effects of the order of precursor addition and zirconium content) in n-heptane reforming were studied.
-
Article
Preparation of Mesoporous γ-Al2O3 from Aluminum Hydroxide Peptized with Organic Acids
The relationships of the formation of aluminum oxide from aluminum hydroxide peptized with organic acids (propionic, maleic, malonic, tartaric) were studied. The pore structure parameters of the hydroxide samp...
-
Article
Characteristics and catalytic activity of platinum reforming catalysts based on aluminum oxide modified by organic acids
The effect of treating aluminum oxide with organic acids (acetic acid, oxalic acid) on the dispersity, composition, and catalytic properties of the platinum sites of reforming catalysts is investigated. It is ...
-
Article
The role of sulfur in modification of active sites of reforming catalysts
The features of the interaction of hydrogen sulfide with the surface of supports (alumina and silica) and catalysts (Pt/SiO2, Pt/Al2O3, Re/Al2O3, and Pt–Re/Al2O3) have been studied. It has been found that the ads...
-
Article
Effect of pseudoboehmite peptization by organic acids on texture characteristics of obtained aluminum oxides
The texture characteristics of aluminum hydroxides peptized by organic acids and then calcined were studied. A decrease in the pore volume and pore diameter for aluminum hydroxide was studied as a function of ...
-
Article
Synthesis of supports for reforming catalysts
The formation of surface defects in γ-Al2O3 obtained by pseudoboehmite calcination and plasticized with monobasic, dibasic, and tribasic organic acids is reported. The efficiency of catalysts in reforming reactio...
-
Article
A study of the influence of the conditions of preparation of γ-aluminum oxide as a carrier for reforming catalysts on its physicochemical properties
The formation of highly imperfect γ-Al2O3 oxide prepared by calcining pseuodoboehmite and plasticized by organic acids was studied. The nature of the organic acid-aluminum hydroxide plasticizer was found to subst...
