The preparation method of low sodium activated alumina relates to a preparation method of activated alumina as a catalyst carrier for the purification of automobile exhaust. It is characterized in that the preparation process first roasts aluminum hydroxide to obtain the intermediate product rho alumina, and then adds the deoxidized alumina. The sodium agent and the pore expander are subjected to hydrothermal treatment, the treated slurry is filtered and washed with hot pure water and dried, and the dried product is dispersed by a dispersing machine, and activated alumina is obtained by calcination.
Another low-sodium alumina uses high-purity boehmite as the precursor to extract low-sodium activated alumina with excellent performance through advanced production technology.
Activated alumina with high sodium content is simpler. Sodium is added directly to the raw material.
Low-sodium activated alumina product use:
It can be used as catalyst and catalyst carrier, etc.,
It is widely used in petrochemical, coal chemical and other catalyst industries.
Especially suitable for MTO/DMTO (catalyst for methanol to ethylene),
SAPO-34 (silico-aluminum phosphate molecular sieve) and other coal chemical catalysts and carriers.
Advantage:
The developed product has pure crystal phase, low sodium content, narrow particle size distribution, and controllable pore size;
The alumina content is high, the production process is well controlled, and the production efficiency is high.