Method for production of methyl methacrylate by oxidative esterification using a heterogeneous catalyst
US10829432B2 · kind B2 · utility
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Key dates
| Filing date | Jun 25, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Jun 25, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 70% of catalyst volume, and wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.