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In the modern petroleum refining and chemical industries, over 90% of chemical reaction processes are carried out through catalytic reactions; therefore, catalysts have become key to developing new processes and products in these industries. In the refining industry, solid catalysts are generally used, which consist of a carrier and an active component. The carrier is a component unique to solid catalysts; it can increase the specific surface area and enhance heat resistance and mechanical strength, serving as a dispersant, binder, or support for the active components. There are many types of carriers that can be used as catalysts, such as alumina, molecular sieves, silica gel, silicoalumina, activated carbon, and diatomite. However, the amount of alumina carrier accounts for more than half of the total amount of catalyst carriers used. There are 8 grades of alumina, among which Al2O3·1H2O is the most widely used. D—A1 0 is mainly used in high-temperature or externally diffusion-controlled reactions, and can also be employed as a bed support to promote uniform gas flow distribution. 11A1, O is sometimes used in petroleum reforming catalysts. 8A1, O, is used for catalytic reactions that require only a small specific surface area. x—A1, O and P—Al, O are used only as desiccants. K-A1, O, and 0–Al, O, are of the process type and are rarely used in catalysts. A1, O, can also be directly used in reactions such as Claus sulfur recovery, ethanol dehydration, amination, or esterification. Fihrol has long applied activated alumina to FCC catalysts; in its patented technology, two different types of pseudoboehmite are used – one as a binder to improve the strength of the catalyst, and the other to regulate its activity ； Another patented technology of this company states that adding alumina to the catalyst can improve the stability of the zeolite. Engelhand Company has also successfully applied alumina to the modification of catalyst matrices in order to enhance the conversion capacity of heavy oils, while improving the selectivity for coke and dry gas; the activity of the matrix is controlled by regulating the acid distribution within it. In our country, the Petroleum and Chemical Science Research Institute has proposed that the use of a dual-alumina-based adhesive combining gelatinized pseudo-boehmite with aluminum sol can combine the advantages of high cracking activity of gelatinized pseudo-boehmite, good bonding properties of aluminum sol, and low production of coke as reaction byproducts, thereby improving the activity and coke selectivity of FCC catalysts. Data show that the introduction of pseudoboehmite into FCC catalysts can increase the pore volume of the catalyst by 25%, boost its activity by 6 units, and significantly improve its selectivity. The catalyst incorporating pseudoboehmite exhibits consistent acidity and good hydrothermal stability, as well as favorable reaction activity and selectivity. At present, FCC catalysts produced by catalyst manufacturers in China such as Lanlian, Changling, and Zhoucun all use this method. If you have a need to supply pseudoboehmite, feel free to contact us. The contact number is 13815838311. For more detailed information on pseudoboehmite, please visit www.yzztlcrown.com