NDLI: Selectivities in Post-Synthetic Modification of Borosilicate Zeolites

Content Provider	Springer Nature Link
Author	Koller, Hubert Chen, Cong Yan Zones, Stacey I.
Copyright Year	2015
Abstract	The chemistry of post-synthetic modification of borosilicate zeolites, and their understanding and use in catalytic applications are reviewed. First, a survey is given on the practical application of solid state NMR to follow the structural properties of boron. Then, the hydrolytic chemistry of boron in zeolites is summarized with a focus on selective reactivities of trigonal boron created by counterions, and stepwise extraction of boron from the framework. The reinsertion of other heteroatoms (mainly Al is discussed here) can be carried out by three different methods with different selectivities. First, the extent of Al reinsertion can be tailored quantitatively by controlling boron removal and vacancy formation with appropriate counterions. Secondly, the substitution of Al for B can be kinetically retarded by using uncalcined as-made zeolites with organic structure directing agents still occluded in the pores. Although these zeolites are not porous, quantitative replacement of framework atoms (Al for B) is possible, most likely by a solid state diffusion mechanism. Finally, Al reinsertion can be efficiently achieved in aqueous Al(NO$_{3}$)$_{3}$ solution under acidic conditions and is pore selective. This is due to the finding that the hydrated aluminum cations are too bulky for medium-sized pores, so that preferably 12-membered ring pores can be aluminated, and 10-membered ring pores do not substitute Al for B. This substitution can be quantitatively followed by the pH change in the zeolite/Al(NO$_{3}$)$_{3}$ slurry. A variety of catalytic test reactions are used to characterize the catalytic properties of the aluminosilicate zeolites prepared via post-synthetic treatment of their borosilicate counterparts.
Starting Page	451
Ending Page	479
Page Count	29
File Format	PDF
ISSN	10225528
Journal	Topics in Catalysis
Volume Number	58
Issue Number	7-9
e-ISSN	15729028
Language	English
Publisher	Springer US
Publisher Date	2015-04-14
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Borosilicate and aluminosilicate zeolites Post-synthetic modification Solid state NMR Catalysis Physical Chemistry Pharmacy Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Acid sites topology in aluminas and zeolites from high-resolution solid-state NMR

Solid State NMR Characterization of Sn-Beta Zeolites that Catalyze Glucose Isomerization and Epimerization

The dynamics of hydrogen bonds and proton transfer in zeolites – joint vistas from solid-state NMR and quantum chemistry

Cadmium Solid State NMR Studies of Cadmium-Exchanged Zeolites

Zeolites for fine chemicals production

Theoretical chemistry as a tool for interpreting catalysts selectivities

Applications of zeolites in petroleum refining

NMR and theoretical studies of solid acids: super and otherwise

Catalytic Applications of Zeolites in Chemical Industry

Selectivities in Post-Synthetic Modification of Borosilicate Zeolites

Similar Documents

Acid sites topology in aluminas and zeolites from high-resolution solid-state NMR

Solid State NMR Characterization of Sn-Beta Zeolites that Catalyze Glucose Isomerization and Epimerization

The dynamics of hydrogen bonds and proton transfer in zeolites – joint vistas from solid-state NMR and quantum chemistry

Cadmium Solid State NMR Studies of Cadmium-Exchanged Zeolites

Zeolites for fine chemicals production

Theoretical chemistry as a tool for interpreting catalysts selectivities

Applications of zeolites in petroleum refining

NMR and theoretical studies of solid acids: super and otherwise

Catalytic Applications of Zeolites in Chemical Industry

Selectivities in Post-Synthetic Modification of Borosilicate Zeolites