Synthesis and Structure of Polymorph B of Zeolite Beta
Source abstract
Abstract
It was found that either polymorph B or polymorph C of zeolite beta can be obtained from the same structure directing agent: 4,4-dimethyl-4-azonia-tricyclo[5.2.2.0 2,6 ]undec-8-ene hydroxide. The synthesis occurs through a consecutive process where polymorph B is first formed and then transformed into polymorph C. It is possible to produce a zeolite highly enriched in polymorph B, provided that the transformation of this phase into polymorph C is slowed down up to the point where polymorph C is only detected at trace levels. The structure of polymorph B was determined for the first time by electron crystallography with SAED and HRTEM from areas of unfaulted polymorph B crystals.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Zeolite Catalysis and Synthesis · Mesoporous Materials and Catalysis · Chemical Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Instituto de Tecnología Química, UPV-CSIC, Universidad Politécnica de Valencia, Avenida de los Naranjos s/n, 46022 Valencia, Spain, Structural Chemistry Department, Stockholm University, SE-106 91 Stockholm, Sweden, Inorganic Chemistry Department, Stockholm University, SE-106 91 Stockholm, Sweden, and Berzelii Centre EXSELENT on Porous Materials, Stockholm University, SE-106 91 Stockholm, Sweden
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