Sou Hu Cai Jing·2025-07-07 01:48Group 1 - The core viewpoint of the article highlights that Sinopec has applied for a patent for a method and system for the selective oxidation of C4 hydrocarbons to produce succinic anhydride, indicating a focus on innovation in chemical processes [1] - The patent application was filed on January 2024, with the publication number CN120247845A, showcasing the company's ongoing research and development efforts [1] - The method involves a two-stage reactor system where the first reactor operates at a lower temperature and uses a low-activity, high-selectivity catalyst, achieving a butane conversion rate of 40-60% and a succinic anhydride selectivity of 60-80% [1] Group 2 - Sinopec, established in 2000, is primarily engaged in oil and gas extraction, with a registered capital of approximately 12.17 billion RMB and has invested in 263 companies [2] - Sinopec has participated in 5,000 bidding projects and holds 45 trademark registrations and 5,000 patent records, indicating a strong presence in the industry [2] - Sinopec (Beijing) Chemical Research Institute, founded in 2021, focuses on the manufacturing of chemical raw materials and products, with a registered capital of 100 million RMB and has invested in 4 companies [2]