Low-Temperature Conversion of ortho-Hydrogen to para-Hydrogen over Ni/Al2O3 Supported Catalysts
А. В. Жужгов, О. П. Криворучко, Л. А. Исупова
Abstract
Comparative studies of Ni/Al2O3 catalysts during the low-temperature conversion of ortho-hydrogen to para-hydrogen are performed. Industrial alumina of A-64 grade, obtained via precipitation (OAPP-1), and alumina obtained via thermal activation (without coprecipitation) (OAPP-2), are used as the substrates. The volumetric reaction rate constants of 8 ± 1% Ni/OAPP-1 and 8 ± 1% Ni/OAPP-2 catalysts prepared on the basis of these substrates during low-temperature ortho–para conversion (OPC) are 2.2 × 10−3 and 2.4 × 10−3 mol cm−3 s−1, respectively, allowing the use of a more environmentally attractive substrate in preparing the catalyst.
Topics & Concepts
CoprecipitationCatalysisHydrogenMaterials sciencePrecipitationSubstrate (aquarium)Inorganic chemistryChemical engineeringChemistryOrganic chemistryGeologyPhysicsEngineeringMeteorologyOceanographyCatalysts for Methane ReformingAmmonia Synthesis and Nitrogen ReductionCatalytic Processes in Materials Science