公开(公告)号：US3888922A

公开(公告)日：1975-06-10

申请号：US35539073

申请日：1973-04-30

Applicant: CELANESE CORP

Inventor： LEVY LEON B ,  FISHER GENE J

IPC: C08F2/00 ,  C07C51/00 ,  C07C51/50 ,  C07C57/075 ,  C07C67/00 ,  C08F2/38

CPC classification number: C07C51/50 ,  C07C57/04

Abstract: Acrylic acid is stabilized against vinyl-type polymerization with alkylated phenols such as butylated hydroxytoluene or butylated hydroxyanisole, both of which, at suitable levels, are acceptable for incorporation into foods, drugs and cosmetics.

公开(公告)号：US3492357A

公开(公告)日：1970-01-27

申请号：US3492357D

申请日：1968-09-06

Applicant: CELANESE CORP

Inventor： LEVY LEON B

IPC: C08G2/06 ,  C08G2/08 ,  C07C47/10

CPC classification number: C08G2/06 ,  C08G2/08

公开(公告)号：US3875078A

公开(公告)日：1975-04-01

申请号：US36345073

申请日：1973-05-24

Applicant: CELANESE CORP

Inventor： LEVY LEON B

IPC: B01J27/057 ,  C07C51/25 ,  B01J11/82

CPC classification number: B01J27/0576 ,  B01J2523/00 ,  C07C51/252 ,  C07C57/04 ,  B01J2523/64 ,  B01J2523/68 ,  B01J2523/845 ,  B01J2523/822 ,  B01J2523/305

Abstract: A process for the oxidation of olefins to the corresponding unsaturated aldehydes and acids, e.g. propylene to acrolein and acrylic acid, by reacting the olefin with oxygen in the presence of a catalyst of the empirical formula

公开(公告)号：US3703551A

公开(公告)日：1972-11-21

申请号：US3703551D

申请日：1971-03-16

Applicant: CELANESE CORP

Inventor： LEVY LEON B

IPC: B01J27/057 ,  B01J37/28 ,  C07C45/34 ,  C07C45/35 ,  C07C51/25 ,  C07C57/04 ,  C07C47/22

CPC classification number: C07C45/35 ,  B01J27/0576 ,  B01J37/28 ,  B01J2523/00 ,  C07C45/34 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/31 ,  B01J2523/51 ,  B01J2523/64 ,  B01J2523/68 ,  B01J2523/74

Abstract: DISCLOSURE RELATES TO THE OXIDATION OF OLEFINS TO UNSATURATED ALDEHYDES AND UNSATURATED ACIDS SUCH AS THE CONVERSION OF PROPYLENE TO ACROLEIN AND ACRYLIC ACID IN THE VAPOR PHASE AND AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST COMPRISING PHOSPHORUS, MOLYBDENUM AND TELLURIUM DIOXIDE SUPPORTED WITH RHENIUM ON AN INERT SUPPORT AND METHODS FOR PREPARATION OF THE CATALYST.

公开(公告)号：US3637526A

公开(公告)日：1972-01-25

申请号：US3637526D

申请日：1970-04-02

Applicant: CELANESE CORP

Inventor： LEVY LEON B

IPC: B01J27/057 ,  C07C45/35 ,  B01J11/74

CPC classification number: B01J27/0576 ,  C07C45/35 ,  C07C47/22

Abstract: Disclosed herein is a process for preparing an oxidation catalyst containing molybdenum, tungsten, tellurium, and oxygen, which catalyst has particular utility for the oxidation of propylene to acrolein. A preferred embodiment comprises forming an aqueous solution of ammonium paratungstate and ammonium molybdate, evaporating the liquid from the solution, pulverizing the solid, and then calcining at a temperature of about 400* C. The calcinate is then mixed with tellurium dioxide and the admixture is calcined. This procedure gives longer catalyst life for the oxidation of propylene to acrolein.

Abstract translation: 本文公开了一种制备含有钼，钨，碲和氧的氧化催化剂的方法，该催化剂特别用于将丙烯氧化成丙烯醛。 优选的实施方案包括形成仲钨酸铵和钼酸铵的水溶液，从溶液中蒸发出液体，粉碎固体，然后在约400℃的温度下煅烧。然后将煅烧物与二氧化碲混合，混合物为 煅烧。 该方法为丙烯氧化成丙烯醛提供更长的催化剂寿命。