Elements of the Manufacture and Properties of Technical Catalysts

Abstract

Despite the humongous volume of literature aiming to present the synthesis of innovative, more selective, stable, and active solid catalysts, the catalysts that come to be used at the industrial level, known as technical catalysts, are scarcely studied and poorly understood starting from the fact that most of the information on their manufacturing remains as an industrial secret. Therefore, many knowledge gaps and uncertainties in the techniques suitable to transform catalytic powders into technical catalysts lie ahead of those researchers who decide to engage in the development and study of applied catalysis. Therefore, this review seeks to provide guidance on the process for manufacturing technical catalysts from catalytic powders while also providing insight into the targeted properties of such materials. Specifically, this review examines the aspects related to the manufacture of technical catalysts spanning from the operations related to the mixture of their components to the thermal treatments to which the corresponding shaped bodies are submitted. Furthermore, we define and discuss the properties considered as key when evaluating the catalytic performance of the shaped materials.

Maximizing Chlorine Gas Conversion in Methyl Chloride Production by the Integration of Methane Chlorination and Methanol Hydrochlorination

“…Graphite powder (DN 8, Samjung C&G, Korea) was selected as the catalyst, with pseudoboehmite (NH–P-DF, Zibo XiangRun Environment Engineering, China) as the inorganic binder and mecellose (PMB-40H, Lotte Fine Chemical, Korea) as the organic binder. The inorganic binder was employed to impart mechanical strength, abrasion resistance, and porosity to the formed catalysts, while the organic binder was utilized to enhance adhesion between the catalyst particles and substrates, as well as to improve processability during the shaping and molding processes of catalyst materials. − Specified quantities of these components were thoroughly mixed, and deionized water was added to the mixture to achieve a paste consistency. The paste was loaded into a lab-made extrude machine, where it was shaped into cylindrical forms measuring 1.9 mm in diameter and 500 mm in length.…”