发明授权
- 专利标题: Hydrogenation of alkyl oxalates
- 专利标题(中): 草酸烷基酯的氢化
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申请号: US844559申请日: 1986-03-27
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公开(公告)号: US4649226A公开(公告)日: 1987-03-10
- 发明人: Fedor Poppelsdorf , Charles A. Smith
- 申请人: Fedor Poppelsdorf , Charles A. Smith
- 申请人地址: CT Danbury
- 专利权人: Union Carbide Corporation
- 当前专利权人: Union Carbide Corporation
- 当前专利权人地址: CT Danbury
- 主分类号: B01J35/02
- IPC分类号: B01J35/02 ; B01J23/72 ; C07B61/00 ; C07C27/00 ; C07C29/132 ; C07C29/136 ; C07C29/149 ; C07C31/20 ; C07C67/00
摘要:
An improved calcined hydrogenation catalyst shape which is useful for the catalysis of hydrogenation reactions in a tubular reactor is provided. The catalyst shape has an annular configuration with an open center core, and wherein the shape contains, as a reinforcing matrix distributed therein, up to about 50 percent by weight of milled glass fibers having specific dimensions and wherein the crush strength of the shape is vastly improved with little change in catalytic activity over the non-reinforced shape of comparable size. Additionally, when the shapes of the present invention are employed pressure-drop and diffusion problems are reduced. The catalyst shapes are particularly useful for the hydrogenation of alkyl oxalates to ethylene glycol whereby the reaction can be conducted at lower temperatures and hence by-product formation is minimized.
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