Invention Application
- Patent Title: PROCESS FOR PREPARING ACRYLIC ACID USING AN ALKALI METAL-FREE AND ALKALINE EARTH METAL-FREE ZEOLITIC MATERIAL
- Patent Title (中): 使用无碱碱金属碱金属无碱金属材料制备丙烯酸的方法
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Application No.: US14724244Application Date: 2015-05-28
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Publication No.: US20150344394A1Publication Date: 2015-12-03
- Inventor: Andrei-Nicolae PARVULESCU , Armin LANGE DE OLIVEIRA , Stephan A. SCHUNK , Nicolai Tonio WOERZ , Marco HARTMANN , Kazuhiko AMAKAWA , Michael GOEBEL , Yong LIU , Michael LEJKOWSKI
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Priority: DE102014008081.1 20140530
- Main IPC: C07C51/347
- IPC: C07C51/347

Abstract:
A process for preparing acrylic acid, comprising (i) providing a stream S4 comprising a formaldehyde source and acetic acid; (ii) contacting stream S4 with an aldol condensation catalyst comprising a zeolitic material comprising aluminum in the framework structure to obtain a stream S6 comprising acrylic acid, the framework structure of the zeolitic material in (ii) comprising YO2 and Al2O3, and Y being a tetravalent element; where the total content of alkali metal and alkaline earth metal in the zeolitic material in (ii), calculated as alkali metal oxide and alkaline earth metal oxide, is from 0% to 0.1% by weight, based in each case on the total weight of the zeolitic material, and where the aldol condensation catalyst in (ii) comprises, outside the framework structure of the zeolitic material present therein, from 0% to 1% by weight of vanadium, based on vanadium as vanadium(V) oxide.
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