柴油加氢精制催化剂及其制备和应用
By introducing pre-made Brønsted acid-containing alumina material into the diesel hydrotreating catalyst support, the acid content and acid strength were controlled, solving the problems of catalyst deactivation due to coking and uncontrollable acid strength, improving desulfurization efficiency and activity, and reducing reaction temperature.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PETROCHINA CO LTD
- Filing Date
- 2022-10-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing diesel hydrotreating catalysts suffer from problems such as high deactivation rates due to coking, uncontrollable acid strength, and easy formation of coke at Lewis acid sites. These issues lead to decreased catalyst activity and poor reactant proximity, thus affecting desulfurization efficiency.
By introducing pre-made alumina material containing Brønsted acid into the catalyst support, the amount and strength of acid can be controlled to promote the direct desulfurization and hydroisomerization-direct desulfurization reaction pathways, reduce hydrogen consumption, and improve desulfurization activity.
The catalyst achieved a low carbon deposit deactivation rate, which improved the efficiency and activity of diesel hydrodesulfurization, reduced the reaction temperature, and promoted the simultaneous removal of sulfur and nitrogen oxides.
Smart Images
Figure BDA0003878496270000061 
Figure BDA0003878496270000071 
Figure BDA0003878496270000081