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A bifunctional zeolitic porous liquid with incompatible Lewis pairs for antagonistic cascade catalysis

Journal Article · · Chem
 [1];  [1];  [2];  [3];  [4];  [5];  [1];  [3];  [6];  [5];  [5];  [3];  [5];  [5];  [7];  [8];  [4]
  1. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Nanchang Univ. (China); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Nanchang Univ. (China)
  6. Jiangsu University, Zhenjiang (China)
  7. Tongji Unversity, Shanghai (China)
  8. Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai (China)
The emergence of porous liquids (PLs) opened opportunities to form unique antagonistic systems capable of fulfilling cascade reactions promoted by incompatible active sites in one pot, which is a long-term challenging subject in catalysis. Herein, unique bifunctional type III PL-based systems were facilely fabricated via assembly of zeolite nanosheets with ionic liquids. Rational structural design afforded PLs that feature high zeolite concentration, stable dispersion after 2 years, abundant cavity distribution, and involvement of antagonistic groups (acid and base sites) in separated and active form via steric hindrance control and electronic repulsion regulation. These unique properties worked cooperatively to fulfill the cascade deacetalization-Knoevenagel/Aldol condensation in one pot with superior catalytic efficiency outperforming the traditional systems. The key to success lies in the formation of bifunctional composites, transformation of zeolite from heterogeneous to homogeneous via surface modification, as well as rapid mass transfer ensured by the rigid porous architecture.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1830136
Alternate ID(s):
OSTI ID: 1869352
Journal Information:
Chem, Journal Name: Chem Journal Issue: 12 Vol. 7; ISSN 2451-9294
Publisher:
Cell Press, ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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