Investigation of pelletization stage and its role in the formation of catalyst quality indices

Ovsienko, O. L.

doi:10.1134/s2070050409040138

Cited by 2 publications

(3 citation statements)

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“…The administration of additives to a catalytic formulation must be done with care to avoid undesirable effects on mechanical resistance, porosity, and catalytic performance. The literature on the topic − ,,, warns on the harmful effects of excess additives over the properties of technical catalysts . So far, fundamental understanding and modeling of the process of pelletizing catalysts remains unexplored hence providing multiple opportunities for research and development of process optimization strategies while targeting specific properties of interest for catalytic applications.…”

Section: Manufacture Of Technical Catalystsmentioning

confidence: 99%

“…Another alternative to increase adhesiveness forces is adding water. Both the high dipole moment of water and its dissociation to make surface hydroxyls over the oxide components of the formulation contributes to increasing adhesiveness at ambient conditions . The administration of additives to a catalytic formulation must be done with care to avoid undesirable effects on mechanical resistance, porosity, and catalytic performance.…”

Section: Manufacture Of Technical Catalystsmentioning

confidence: 99%

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Elements of the Manufacture and Properties of Technical Catalysts

García-Sánchez

Medrano

2023

Ind. Eng. Chem. Res.

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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.

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Section: Manufacture Of Technical Catalystsmentioning

confidence: 99%

Section: Manufacture Of Technical Catalystsmentioning

confidence: 99%

Elements of the Manufacture and Properties of Technical Catalysts

García-Sánchez

Medrano

2023

Ind. Eng. Chem. Res.

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“…The mechanical strength and structural integrity of the product is very much dependent on the pressure applied, which needs to be rather high. In practice, it is observed that exerting this pressure may break down larger crystals and disrupt existing pore systems (Yakubovich et al, 1984;Li et al, 1991;Ovsienko, 2009;Bingre et al, 2018). Unlike possible particle size distributions introduced through the granulation process, a dry compacting process yields the intended geometry at all times.…”

Section: Pelletsmentioning

confidence: 99%

Review on Additive Manufacturing of Catalysts and Sorbents and the Potential for Process Intensification

Rosseau

Willemsen²,

Roghair

et al. 2022

Front. Chem. Eng.

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Additive manufacturing of catalyst and sorbent materials promises to unlock large design freedom in the structuring of these materials, and could be used to locally tune porosity, shape and resulting parameters throughout the reactor along both the axial and transverse coordinates. This contrasts catalyst structuring by conventional methods, which yields either very dense randomly packed beds or very open cellular structures. Different 3D-printing processes for catalytic and sorbent materials exist, and the selection of an appropriate process, taking into account compatible materials, porosity and resolution, may indeed enable unbounded options for geometries. In this review, recent efforts in the field of 3D-printing of catalyst and sorbent materials are discussed. It will be argued that these efforts, whilst promising, do not yet exploit the full potential of the technology, since most studies considered small structures that are very similar to structures that can be produced through conventional methods. In addition, these studies are mostly motivated by chemical and material considerations within the printing process, without explicitly striving for process intensification. To enable value-added application of 3D-printing in the chemical process industries, three crucial requirements for increased process intensification potential will be set out: i) the production of mechanically stable structures without binders; ii) the introduction of local variations throughout the structure; and iii) the use of multiple materials within one printed structure.

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Investigation of pelletization stage and its role in the formation of catalyst quality indices

Cited by 2 publications

References 0 publications

Elements of the Manufacture and Properties of Technical Catalysts

Elements of the Manufacture and Properties of Technical Catalysts

Review on Additive Manufacturing of Catalysts and Sorbents and the Potential for Process Intensification

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