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Process for producing terephthalic acid Патенты

Язык: Английский
Тип: Заявка на патент
Номер (11) US 20120004450 A1
Номер заявки (21): 13/155,553
Дата подачи заявки (22): 8 июн. 2011 г.
Дата начала отсчета срока действия патента (24):
Дата публикации патента (44,45,46):
Дата публикации заявки (43): 5 янв. 2012 г.
Авторы Bhattacharyya Alakananda , Kocal Joseph A , Walenga Joel T. , Адонин Николай Юрьевич , Кузнецова Нина Ивановна , Bal'zhinimaev B.S.
Организации
1 Boreskov Institute of Catalysis
2 UOP LLC
Реферат: A solid terephthalic acid composition and a process for producing terephthalic acid from para-xylene. The process comprises forming a mixture comprising the para-xylene, a solvent, a bromine source, and a catalyst; and oxidizing the para-xylene by contacting the mixture with an oxidizing agent at oxidizing conditions to produce a solid oxidation product comprising terephthalic acid, para-toluic acid, 4-carboxybenzaldehyde. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms and an dialkyl imidazolium ionic liquid; and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium. The solid terephthalic acid composition comprises, less than about 4,000 ppm-wt 4-carboxybenzaldehyde content, and more than about 2,000 ppm-wt a para-toluic acid.
Библиографическая ссылка: Bhattacharyya A. , Kocal J.A. , Walenga J. , Adonin N.Y. , Kuznetsova N.I. , Bal'zhinimaev B.S.
Process for producing terephthalic acid
Номер: US20120004450A1, , Заявка 13/155,553 с 8 июн. 2011 г. CAPlusCA
Идентификаторы БД:
Chemical Abstracts: 2012:28104
Chemical Abstracts (print): 156:99707
Название: Process for producing terephthalic acid