公开(公告)号：US20230094935A1

公开(公告)日：2023-03-30

申请号：US17802865

申请日：2021-02-24

Applicant: SABIC Global Technologies B.V.

Inventor： Syed Azhar Hashmi ,  Prasanna Kumar Pathath ,  Suman Kumar Jana ,  Vadlamani Chaitanya ,  Naveen Sathu ,  Lee Sangjoo ,  Debasish Das ,  Selvakumar Subramanian

IPC: C07C51/265 ,  B01J27/128 ,  B01J35/12

Abstract: Disclosed is a process for producing terephthalic acid. The process includes contacting p-xylene with a gaseous stream containing oxygen (O2) in presence of a homogeneous catalyst solution, at a reaction temperature of 180° C. to 195° C. to oxidize at least a portion of the p-xylene and form a product stream containing terephthalic acid, said homogeneous catalyst solution contains 350 ppm to 450 ppm cobalt (Co), 170 ppm to 270 ppm manganese (Mn), and 410 ppm to 510 ppm bromine (Br), wherein a Br/(Co+Mn) wt. % ratio is 0.5:1 to 1:1, and a Co to Mn wt. % ratio is 1.5:1 to 2:1.

公开(公告)号：US20160296921A1

公开(公告)日：2016-10-13

申请号：US15101160

申请日：2014-12-09

Applicant: SAUDI BASIC INDUSTRIES CORPORATION ,  SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Debasish Das ,  Onen Amiruddin Attarwala

IPC: B01J29/08 ,  C07C2/86 ,  B01J37/04 ,  B01J23/75 ,  B01J35/00

CPC classification number: B01J29/082 ,  B01J23/75 ,  B01J29/143 ,  B01J35/0006 ,  B01J37/035 ,  B01J37/04 ,  C07C2/864 ,  C07C2521/02 ,  C07C2523/04 ,  C07C2523/75 ,  C07C2529/14 ,  C07C15/46

Abstract: The invention relates to a process for the preparation of a catalyst composition comprising the steps of: A) preparing a salt of boric acid or phosphoric acid and a bivalent or trivalent metal and B) mixing the salt obtained by step A) with a crystalline aluminosilicate zeolite of the faujasite structure with SiO2/Al2O3 mole ratio in the range of about 2 to about 8 and including potassium, rubidium or cesium cations or combinations thereof, wherein step A) comprises the sub-steps of A1) mixing a borate or a phosphate of an alkali metal and a water soluble salt of the bivalent or trivalent metal to obtain a suspension, A2) adding an alkaline solution to the suspension obtained by sub-step A1) to obtain a solution having a pH of 7.0-11.5 and A3) mixing the solution obtained by sub-step A2) to obtain the salt.

Abstract translation: 本发明涉及一种制备催化剂组合物的方法，包括以下步骤：A）制备硼酸或磷酸和二价或三价金属的盐，以及B）将由步骤A）得到的盐与结晶硅铝酸盐 八面沸石结构的沸石，其SiO 2 / Al 2 O 3摩尔比在约2至约8的范围内，并且包括钾，铷或铯阳离子或其组合，其中步骤A）包括以下子步骤：A1）将硼酸盐或磷酸盐 的碱金属和二价或三价金属的水溶性盐以获得悬浮液，A2）向通过步骤A1）得到的悬浮液中加入碱性溶液，得到pH为7.0-11.5的溶液和A3） 将通过步骤A2）得到的溶液混合，得到盐。