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公开(公告)号：WO2021260140A1
公开(公告)日：2021-12-30
申请号：PCT/EP2021/067398
申请日：2021-06-24
Applicant: BASF SE
Inventor： CHOI, Sung Yeun , KARPOV, Andrey , WALSDORFF, Christian , KHARAS, Karl C.
IPC: B01J21/04 , B01J23/50 , B01J23/68 , B01J35/10 , B01J35/02 , B01J37/00 , B01J37/08 , C01F7/02 , C07D301/10 , C04B35/111 , C01F7/44 , B01J23/688 , C04B2235/3218 , C04B2235/602 , C04B2235/6021 , C04B2235/604 , C04B2235/661 , C04B2235/72 , C04B2235/725 , C04B2235/77 , C04B2235/788 , C04B2235/94 , C04B2235/945 , C04B35/62695 , C04B35/63444 , C04B35/64
Abstract: A porous alpha-alumina catalyst support is prepared by (i) preparing a precursor material comprising a boehmitic-derived alumina having a pore volume of at least 0.6 mL/g, wherein the boehmitic-derived alumina is obtained by thermal decomposition of a boehmitic starting material and the boehmitic starting material consists predominantly of block-shaped crystals, and optionally an inorganic bond material; (ii) forming the precursor material into shaped bodies; (iii) calcining the shaped bodies to obtain the porous alpha-alumina catalyst support. The support structure has a high overall pore volume, while keeping its surface area sufficiently large so as to provide optimal dispersion of catalytically active species, in particular metal species. The support is useful for a catalyst for producing ethylene oxide by gas-phase oxidation of ethylene.
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