ZSM-35 molecular sieve
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ZSM-35 is a type of synthetic zeolite, which belongs to the family of molecular sieves. It has a unique framework structure known as FER (named after the mineral ferrierite), which gives it specific properties that make it useful in various catalytic applications. Here's an overview of ZSM-35 molecular sieve:
Key Features and Properties
Structure: The FER structure of ZSM-35 consists of intersecting 8-membered ring channels, with pore openings measuring approximately 0.35 x 0.48 nm.
Acidity: ZSM-35 can be synthesized with varying levels of acid sites, which are crucial for its catalytic performance.
Thermal Stability: It exhibits good thermal stability, allowing it to maintain its structure and functionality at high temperatures.
Hydrophobicity: Depending on the Si/Al ratio, ZSM-35 can be made more hydrophobic, which affects its selectivity and interaction with different reactants.
Applications
Petrochemical Industry:
Isomerization: ZSM-35 is used in the isomerization of olefins, such as converting n-butenes into iso-butenes, which are important intermediates for producing high-octane gasoline additives like methyl tert-butyl ether (MTBE).
Alkylation: It can act as a catalyst in alkylation reactions where small alkenes are added to isoparaffins to produce higher octane products.
Fine Chemicals and Pharmaceuticals:
Due to its shape-selective properties, ZSM-35 can be used in the synthesis of fine chemicals and pharmaceutical intermediates, where precise control over product distribution is essential.
Environmental Protection:
ZSM-35 can be employed in the removal or conversion of pollutants due to its adsorption and catalytic properties.
Alternative Energy:
In emerging fields like biofuels production, ZSM-35 can facilitate processes such as the upgrading of biomass-derived compounds into more valuable fuels and chemicals.
