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1.发明申请公开(公告)号：US20180008962A1
公开(公告)日：2018-01-11
申请号：US15545532
申请日：2016-01-14
Applicant: BASF SE
IPC: B01J23/22 , B01J37/02 , B01J27/198 , B01J23/00 , B01J35/00 , C07D307/89 , B01J37/08
Abstract: The present invention relates to a catalyst system for oxidation of o-xylene and/or naphthalene to phthalic anhydride (PA) comprising at least four catalyst zones arranged in succession in the reaction tube and filled with catalysts of different chemical composition wherein the active material of the catalysts comprise vanadium and titanium dioxide and the active material of the catalyst in the last catalyst zone towards the reactor outlet has an antimony content (calculated as antimony trioxide) between 0.7 to 3.0 wt. %. The present invention further relates to a process for gas phase oxidation in which a gas stream comprising at least one hydrocarbon and molecular oxygen is passed through a catalyst system which comprises at least four catalyst zones arranged in succession in the reaction tube and filled with catalysts of different chemical composition wherein the active materials of the catalysts comprise vanadium and titanium dioxide and the active material of the catalyst in the last catalyst zone towards the reactor outlet has an antimony content (calculated as antimony trioxide) between 0.7 to 3.0 wt. %.
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公开(公告)号：BR112019013487A2
公开(公告)日：2020-01-07
申请号：BR112019013487
申请日：2017-12-28
Inventor： DIANA CAROLINA GALEANO NUNEZ , EDGAR VIKTOR HUENNEKES , FENG ZHAO , JIADI ZHANG , LIANG CHEN , SABINE HUBER
Abstract: são revelados um catalisador alveolar extrudado, um processo para preparar o catalisador, um método para reduzir nox no gás de exaustão de um motor de combustão interna usando o catalisador e um método para tratamento do gás de emissão gerado a partir de uma usina de energia, compreendendo expor o gás de emissão ao catalisador.
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