公开(公告)号：JPH11322696A

公开(公告)日：1999-11-24

申请号：JP33815698

申请日：1998-11-27

Applicant: STANDARD OIL CO OHIO

Inventor： GRAHAM ANNE M ,  GODBOLE SANJAY P ,  LEE DANIEL G

IPC: C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: PROBLEM TO BE SOLVED: To obtain a specific unsaturated mononitrile useful as a monomer for a polymerizing reaction without contamination with an impurity by reacting a specific olefin, ammonia, etc., in the presence of a catalyst, reducing the pH of an aqueous stream used till the recovery and purification before recycling and then reducing the amount of the trace impurity. SOLUTION: An olefin selected from propylene and isobutylene is reacted with ammonia and oxygen in the presence of a catalyst in a reactor zone. A reactor effluent containing the produced unsaturated mononitrile from the reactor is then brought into contact with at least a first aqueous stream in a quenching column and cooled. The cooled reactor effluent is subsequently brought into contact with at least a second aqueous stream in an absorption column to separate and remove a bottom stream containing the unsaturated mononitrile. The resultant bottom stream is then moved to a recovery and purification section and the pH of at least one aqueous process stream is reduced before recycling to thereby reduce the amount of a trace impurity. The resultant bottom stream is further recycled to afford the objective compound selected from acrylonitrile and methacrylonitrile.

公开(公告)号：BG102955A

公开(公告)日：2000-04-28

申请号：BG10295598

申请日：1998-11-26

Applicant: STANDARD OIL CO OHIO

Inventor： GRAHAM ANNE M ,  GODBOLE SANJAY P ,  LEE DANIEL G

IPC: C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: The invention relates to a method for the manufacturing of unsaturated mononitrile from the group of acrylonitrile and methacrylonitrile. It includes reaction of olefine from the group containing propylene or isobutylene and ammonia and oxygen in a reaction zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile. The effluent runs over a cooling column where, in order to cool, it gets into contact with at least first aqueous stream. The cooled reactor effluent containing the unsaturated mononitrile is transferred into an absorption column where it is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column. The bottom stream containing the unsaturated mononitrile is transferred to a recovery and purification section where the unsaturated mononitrile is recovered and purified. At least one aqueous process stream is recirculated for improving the efficiency of the process consisting in reducing the pH, thereby reducing the amount of trace impurities in the aqueous recirculation stream. 8 claims, 1 figure

公开(公告)号：CA1151138A

公开(公告)日：1983-08-02

申请号：CA360211

申请日：1980-09-12

Applicant: STANDARD OIL CO OHIO

Inventor： PESA FREDERICK A ,  GRAHAM ANNE M

IPC: C07D207/263 ,  B01J23/00 ,  B01J23/89 ,  C07B61/00 ,  C07D201/08 ,  C07D207/26 ,  C07D207/267 ,  C07D207/38 ,  C07D207/00

Abstract: Five-membered nitrogen-containing saturated heterocyclic compounds, e.g. pyrrolidone, can be prepared by the catalytic hydrogenation/amination or a five-membered heterocyclic anhydride or the corresponding acid. This reaction proceeds with high yields and selectivities when it is conducted in the presence of oxide complex catalysts containing ruthenium.

公开(公告)号：BR9805434A

公开(公告)日：1999-12-14

申请号：BR9805434

申请日：1998-11-26

Applicant: STANDARD OIL CO OHIO

Inventor： GRAHAM ANNE M ,  GODBOLE SANJAY P ,  LEE DANIEL G

IPC: C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: A process for manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising reacting an olefin selected from the group consisting of propylene and isobutylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile, transferring the reactor effluent containing the unsaturated mononitrile to a quench column wherein the reactor effluent containing the unsaturated mononitrile is contacted with at least a first aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the unsaturated mononitrile to an absorption column wherein the reactor effluent containing unsaturated mononitrile is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column, transferring the bottom stream containing the unsaturated mononitrile to a recovery and purification section where the unsaturated mononitrile is recovered and purified, and recycling at least one aqueous process stream to improve the efficiency of the process wherein the improvement comprises treating at least one aqueous stream before recycling into the process stream to reduce the pH thereby reducing the amount of trace impurities present in the aqueous recycle stream.

公开(公告)号：ZA9810259B

公开(公告)日：1999-05-18

申请号：ZA9810259

申请日：1998-11-10

Applicant: STANDARD OIL CO OHIO

Inventor： GRAHAM ANNE M ,  GODBOLE SANJAY P ,  LEE DANIEL G

IPC: C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08 ,  C07C

Abstract: A process for manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising reacting an olefin selected from the group consisting of propylene and isobutylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile, transferring the reactor effluent containing the unsaturated mononitrile to a quench column wherein the reactor effluent containing the unsaturated mononitrile is contacted with at least a first aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the unsaturated mononitrile to an absorption column wherein the reactor effluent containing unsaturated mononitrile is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column, transferring the bottom stream containing the unsaturated mononitrile to a recovery and purification section where the unsaturated mononitrile is recovered and purified, and recycling at least one aqueous process stream to improve the efficiency of the process wherein the improvement comprises treating at least one aqueous stream before recycling into the process stream to reduce the pH thereby reducing the amount of trace impurities present in the aqueous recycle stream.

公开(公告)号：CA1195678A

公开(公告)日：1985-10-22

申请号：CA416328

申请日：1982-11-25

Applicant: STANDARD OIL CO OHIO

Inventor： PESA FREDERICK A ,  GRAHAM ANNE M

IPC: B01J23/89 ,  B01J27/24 ,  C07C1/04 ,  C07C9/00 ,  C07C29/157 ,  C07C29/158 ,  C07C31/04 ,  C07C31/08 ,  C07C51/10 ,  C07C27/06 ,  B01J23/70

Abstract: A process is provided for the upgrading of synthesis gas to hydrocarbons and oxygenated hydrocarbons, particularly olefins and carboxylic acids by contacting synthesis gas with catalysts comprising the mixed oxides of ruthenium, copper, an alkali or alkaline earth metal, and optionally a metal selected from Ce, Cr, Fe, Mn, Mo, Th, Zn or mixtures thereof. The synthesis gas upgrading product may be contacted with a hydrogenation catalyst to provide alkanes, alcohols and esters, useful for fuels. Catalysts comprising the mixed oxides of ruthenium, copper, at least one alkali metal and at least one of rhodium, iridium, palladium, and platinum are further provided which are useful in the upgrading of synthesis gas, particularly for obtaining alkanes and alcohols.

公开(公告)号：CA1151669A

公开(公告)日：1983-08-09

申请号：CA361379

申请日：1980-10-02

Applicant: STANDARD OIL CO OHIO

Inventor： PESA FREDERICK A ,  GRAHAM ANNE M

IPC: C07C120/12

Abstract: Nitriles are prepared by contacting an activated olefin, e.g. methyl acrylate, with gaseous hydrogen cyanide in the presence of a catalyst containing an element selected from the group consisting of Group IA and IIA.

公开(公告)号：CA1135693A

公开(公告)日：1982-11-16

申请号：CA348989

申请日：1980-04-01

Applicant: STANDARD OIL CO OHIO

Inventor： PESA FREDERICK A ,  GRAHAM ANNE M

IPC: C07D223/10 ,  B01J23/00 ,  B01J23/64 ,  B01J23/84 ,  B01J23/89 ,  C07B61/00 ,  C07D201/02 ,  C07D201/08 ,  C07D207/263 ,  C07D211/76 ,  C07D207/26

Abstract: Five, six and seven member nitrogen-containing saturated heterocyclic compounds can be prepared by the catalytic hydrogenation/cyclization of beta, gamma and delta-cyanoesters. Applicants have discovered that this reaction is especially effective when it is conducted in the presence of catalysts comprising at least one of ruthenium and iron.