Furfural is a platform molecule that can be catalytically converted using cascade series of reactions into levulinic esters, essential compounds used as fuel additives. Bifunctional catalysts containing Lewis and Brønsted acid sites such zeolites are commonly for these conversions. However, microporous often present diffusional restriction due to the size similarity furfural other molecules zeo...

Hierarchical zeolites are regarded as promising catalysts due to their well-developed porosity, increased accessible surface area, and minimal diffusion constraints. Thus far, the focus has been on creation of mesopores in zeolites, however, little is known about a microporosity upgrading its effect catalytic performance. Here authors show that “birth” mesopore formation faujasite (FAU) type ze...

Simultaneous achievement of constructing mesopores and eliminating anatase is a long-term pursuit for enhancing the catalytic performance TS-1. Here, we developed an aromatic compounds-mediated synthesis method to prepare anatase-free hierarchical TS-1 olefin epoxidation. A series zeolites were prepared by introducing compounds containing different functional groups via crystallization process....

Beta zeolite, a crystal material with three-dimensional twelve-ring cross-channel structure, has many advantages, such as high Brønsted acid concentration, Si/Al ratio, thermal/hydrothermal stability, and large surface area. Due to these beta zeolite shows excellent catalytic performance in petroleum refining petrochemical processes. However, traditionally microporous strong steric hindrance di...

Natural zeolites occur in over 40 countries and are mined in 11 of these at a rate of around 250 thousand tonnes per year. Discovery of the characteristic ion-exchange, dehydration and selective-adsorption properties of these zeolites, which are related to their unique honeycomb structure, stimulated the development of severa1 processes for the manufacture of synthetic zeolites. These synthetic...