Organic-Free Preparation of Beta with Hierarchical Pores via a Potassium Carbonate-Assisted Method

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Beta zeolite with micromesoporosity showed great application potential due to its hierarchical structure. However, this type of hierarchical zeolite was usually prepared in the presence of both an organic microtemplate and a meso-template, which limited its widespread application. In this investigation, a simple and entirely inorganic procedure to manipulate the micromesopore structure was reported. Herein, microporosity was induced by the presence of crystal seeds (CS), and mesoporosity was obtained via the introduction of potassium carbonate. The comprehensive characterization results exhibited that the obtained materials featured a high degree of crystallization and a much-enhanced mesoporosity structure (surface area of mesopores: 121.3 m 2 ·g –1 and mesoporosity volume: 0.15 cm 3 ·g –1 ). Moreover, this novel material showed greatly improved catalytic cracking properties toward heavy oil.