ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,752,253, issued on Oct. 6, was assigned to CHINA PETROLEUM & CHEMICAL Corp. (Beijing) and SINOPEC RESEARCH INSTITUTE OF PETROLEUM PROCESSING Co. LTD. (Beijing).
"M-xylene adsorbent and preparation method therefor" was invented by Ningning Gao (Beijing), Huiguo Wang (Beijing), Yusi Liu (Beijing), Hongchao Wang (Beijing), Yanqiang Yang (Beijing), Xiaofei Qiao (Beijing), Dehua Wang (Beijing), Jianfeng Ma (Beijing), Jin Zhong (Beijing), Junkui Gao (Beijing) and Pengfei Tuo (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A m-xylene adsorbent contains 94 to 99.9 wt % of a Y molecular sieve and 0.1 to 6 wt % of a matrix. The Y molecular sieve consists o...