What is pseudo-boehmite?
Pseudo-boehmite, namely SB powder (Al2O3·nH2O or, AlOOH·H2O n=0.08—0.62) English name Pseudo-boehmite, English abbreviation PB. Pseudo-boehmite, also known as pseudo/quasi/pseudo-boehmite, pseudo-boehmite, gelatinous boehmite, or boehmite-like, is a type of indeterminate composition and incomplete crystallinity. The transition product from order to order, weak crystalline state to crystalline state, the crystal structure is completely similar to boehmite, but the crystal is small, the crystallinity is poor, and the typical structure is very thin platelets with folds. It is a non-toxic, tasteless, and odorless white gel (wet product) or powder (dry product) product with small particle size, high pore volume, large specific surface area, good peptization performance, high crystal phase purity, and The characteristic of thixotropic gel is very easy to dissolve in strong acid and alkali, and the dry powder will absorb moisture when exposed to the air.
In modern petrochemical and chemical industries, more than 90% of chemical reactions are achieved through catalysts. Catalysts are also widely used in new energy development, comprehensive utilization of resources and environmental pollution control. There are many types and quantities of catalysts. Whether it is a solid catalyst used in oil refining, petrochemical industry or fine chemical industry, a carrier is required. Activated alumina carrier accounts for about 57% of the catalyst carrier industry. Pseudo-boehmite, as the most important raw material for the preparation of activated alumina carriers, occupies an important position in the catalyst industry. The amount of pseudo-boehmite used in the production of the catalyst accounts for 20% of the total amount. In recent years, the three major catalyst manufacturers of Sinopec Changling Refinery Co., Ltd., Qilu Petrochemical Company Catalyst Plant, and Lanzhou Refining and Chemical Company Catalyst Plant have successively rebuilt and expanded new production lines, and the demand for pseudo-boehmite has also been increasing. . The United States, Western Europe and Japan are some of the most important catalyst producers abroad.
Main application form:
1. Used as a binder in the petrochemical and refining catalyst industries and as a source of aluminum for molecular sieve synthesis
Pseudo-boehmite is mainly used as a catalytic cracking catalyst as a binder. Pseudo-boehmite as a binder can not only increase the strength of the catalyst, but also adjust the pore size distribution of the catalyst, improve the thermal and hydrothermal stability of the catalyst, adjust the density of the acidic active centers of the catalyst, and improve the catalytic activity.
2. Used as a catalyst carrier
Pseudo-boehmite is widely used as catalyst carrier for various reactions in chemical industry, oil refining and petrochemical industry. Typical examples include hydrofining catalyst carrier, reforming catalyst carrier, and methanation catalyst carrier. Pseudo-boehmite becomes γ-alumina after dehydration and can also be used as a catalyst.
The company specializes in producing high-purity pseudo-boehmite with a purity of over 99.9%. At the same time, we can customize high-purity pseudo-boehmite with required pore volume, pore size, and specific surface area according to customer requirements.