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A few days ago, the short-process high rare earth LaY molecular sieve developed by the Lanzhou Chemical Research Center of China Petrochemical Research Institute was industrially transformed in Lanzhou Petrochemical Catalyst Plant, and a total of 158 tons of qualified products were produced, which has excellent structural stability, short production process and low
cost.
The successful development of short-process high-rare-earth LaY zeolites has laid a solid foundation
for the research and development of low-cost catalytic cracking catalysts.
Y-type zeolite is the key active component of the new catalytic cracking catalyst, and its performance significantly affects the activity and selectivity
of the catalyst.
Theoretically, the higher the rare earth content of Y-type molecular sieve, the higher the selectivity of gasoline and the
better the structural stability.
However, limited by the saturation exchange of cations in Y-type molecular sieve, the industry generally uses the process of multiple exchanges combined with multiple roasting to prepare high rare earth molecular sieve, which leads to the long production process of the molecular sieve, high energy consumption and material
consumption.
