公开(公告)号：US3715320A

公开(公告)日：1973-02-06

申请号：US3715320D

申请日：1971-02-11

Applicant: CELANESE CORP

Inventor： JEFFRIES S

IPC: B01J39/04 ,  C22B3/44 ,  C22B59/00 ,  B01J11/02

CPC classification number: C22B3/44 ,  B01J39/05 ,  Y02P10/234

Abstract: An aqueous nitric acid solution such as is derived from an adipic acid process and containing catalyst metal ions is reacted with formaldehyde to remove a substantial portion of the nitrate ions present prior to passing the aqueous nitric acid solution through an ion exchange zone wherein the metals are removed.

Abstract translation: 将由己二酸法制得并含有催化剂金属离子的硝酸水溶液与甲醛反应以除去存在的大部分硝酸根离子，然后通过硝酸水溶液通过离子交换区，其中金属为 删除。