公开(公告)号：US09434673B2

公开(公告)日：2016-09-06

申请号：US14277384

申请日：2014-05-14

Applicant: BASF SE

Inventor： Philipp Gruene ,  Cornelia Katharina Dobner ,  Marco Hartmann

IPC: B01J27/198 ,  C07C51/347 ,  C07C67/347 ,  C07C51/353

CPC classification number: C07C51/347 ,  C07C51/353 ,  C07C57/04

Abstract: Process for preparing a vinylidenecarboxylic acid or ester thereof, wherein a reaction gas comprising gaseous formaldehyde, molecular oxygen and an alkycarboxylic acid or ester thereof is brought into contact with a solid catalyst whose active composition comprises a vanadium-phosphorus oxide having an average oxidation state of vanadium of from +4.40 to +5.0 to give a product gas comprising the vinylidenecarboxylic acid or ester thereof.

Abstract translation: 制备亚乙烯基羧酸或其酯的方法，其中将包含气态甲醛，分子氧和其烷基羧酸或其酯的反应气体与活性组合物包含平均氧化态的钒 - 磷氧化物的固体催化剂接触 钒为+4.40〜+ 5.0，得到含有亚乙烯基羧酸或其酯的产物气体。

公开(公告)号：US20140343319A1

公开(公告)日：2014-11-20

申请号：US14277414

申请日：2014-05-14

Applicant: BASF SE

Inventor： Michael GOEBEL ,  Christian Walsdorff ,  Marco Hartmann ,  Nicolai Tonio Woerz ,  Tim Blaschke ,  Philipp Gruene

IPC: C07C51/377

CPC classification number: C07C51/377 ,  C07C51/353 ,  C07C57/04

Abstract: In a process for preparing acrylic acid, a reaction gas which comprises a gaseous formaldehyde source and gaseous acetic acid and in which the partial pressure of the formaldehyde source, calculated as formaldehyde equivalents, is at least 85 mbar and in which the molar ratio of the acetic acid to the formaldehyde source, calculated as formaldehyde equivalents, is at least 1 is contacted with a solid condensation catalyst. The space-time yield can be enhanced significantly by increasing the partial pressure of the reactants. The space-time yield remains high even after prolonged process duration.

Abstract translation: 在制备丙烯酸的方法中，包含气态甲醛源和气态乙酸的反应气体，其中以甲醛当量计算的甲醛源的分压为至少85毫巴，其中摩尔比 乙酸至甲醛源，以甲醛当量计算，至少1与固体缩合催化剂接触。 通过增加反应物的分压可以显着提高时空产率。 即使延长工艺持续时间，空时产量仍然很高。