Application of metal-solid acid bifunctional catalyst in polystyrene plastic hydrocracking

• Main Authors: TANG ZHENCHEN, ZHOU YUCHEN, CHEN RIZHI, ZENG FENG, CHEN SHUANGMEI, ZHOU XINRU
• Format: Patent
• Language: Chinese; English
• Published: 02.08.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses application of a metal-acid bifunctional catalyst in hydrocracking, and relates to the field of hydrocracking of polystyrene. The preparation method of the catalyst comprises the step of directly preparing the metal-acid carrier catalyst by utilizing a one-step hydrothermal method. The catalyst provided by the invention is a bifunctional catalyst comprising metal and acidic sites, the metal sites are mainly on the surface of the carrier and can be in full contact with a substrate, the hydrogen activation capability is strong, the number of acidic sites is large, and breakage of carbon-carbon bonds in the hydrocracking process is facilitated. The catalyst provided by the invention can be subjected to one-step reaction under mild reaction conditions, can be applied to a tank reactor or a fixed bed reactor, can be used for efficiently hydrocracking polystyrene, has higher catalytic activity and selectivity of a target product, and is simple in synthesis process, easy to prepare and suitab