Catalyst pellet design of WO3/Si-Al and hydrotalcite binder for propylene self-metathesis

• Published in: Catalysis today Vol. 358; pp. 74 - 89
• Main Authors: Sripinun, Sirada, Gayapan, Krittidech, Tolek, Weerachon, Suriye, Kongkiat, Praserthdam, Piyasan, Assabumrungrat, Suttichai
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2020
• Subjects: Binder; Catalyst pellet design; Kinetics; Metathesis; Propylene; WO3/Si-Al catalysts; Propylene; Catalyst pellet design; Binder; Kinetics; Metathesis; WO3/Si-Al catalysts
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2020.04.036

[Display omitted] •Design of catalyst pellet of WO3/Si-Al and hydrotalcite for propylene self-metathesis•Models of catalyst pellet and axial dispersion reactor were simulated by gPROMS.•Pore and pellet sizes were varied to find a maximum combined C2 and C4 yield.•An optimal catalyst pellet could offer higher product yield than powder catalyst.•Optimum pellet diameter and pore size vary with operating condition. Catalyst pellet design for propylene self-metathesis was investigated. WO3/Si-Al and hydrotalcite were selected as the catalyst and binder, respectively. The reaction kinetics and mathematical models of catalyst pellet with Knudsen diffusion and one-dimensional axial dispersion reactor were developed and simulated using gPROMS to investigate the performance of propylene self-metathesis over the catalyst pellet. A sensitivity analysis of various operating conditions and parameters such as catalyst pore size and pellet size was performed to determine optimal pellet diameter and pore size to maximize the combined yield of ethylene and butenes at minimal C5+ yield. Simulation results revealed optimal catalysts with pellet diameter and pore size ranging from 0.14-5.3 mm and 42-132 Å, respectively depending on operating conditions.