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Title: Are the Brønsted acid sites in amorphous silica-alumina bridging?

Journal Article · · ChemComm
DOI:https://doi.org/10.1039/d3cc04237e· OSTI ID:2204498

Competing models exist to explain the differences in the activity of zeolites and amorphous silica–aluminas. Some postulate that silica–alumina contains dilute zeolitic bridging acid sites, while others favor a pseudo-bridging silanol model. Here, we employed a selective isotope labeling strategy to assess the existence of Si–O(H)–Al bonds using NMR-based distance measurements.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
2204498
Alternate ID(s):
OSTI ID: 2204746
Report Number(s):
IS-J-11,177
Journal Information:
ChemComm, Vol. 59, Issue 94; ISSN 1359-7345
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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