1997
DOI: 10.1016/s0920-5861(96)00106-x
|View full text |Cite
|
Sign up to set email alerts
|

FT-IR characterization of silicated aluminas, active olefin skeletal isomerization catalysts

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

3
25
0

Year Published

1997
1997
2021
2021

Publication Types

Select...
7
1

Relationship

3
5

Authors

Journals

citations
Cited by 65 publications
(29 citation statements)
references
References 35 publications
3
25
0
Order By: Relevance
“…Surface silanols appear only for samples with at least 4% silica. In result in Brønsted acidity (11). This is also observed here and contrasts with what happens with silica-aluminas, any case, no Brønsted acidity appears.…”
Section: Figsupporting
confidence: 68%
“…Surface silanols appear only for samples with at least 4% silica. In result in Brønsted acidity (11). This is also observed here and contrasts with what happens with silica-aluminas, any case, no Brønsted acidity appears.…”
Section: Figsupporting
confidence: 68%
“…3725 cm -1 appears to be more intense, relative to the others, in P than U. It has been reported that small amounts of silica on alumina produce a new OH stretching band just at 3725 cm -1 [32].…”
Section: Resultsmentioning
confidence: 83%
“…SiOx-islands form additional porosity in the range of diameters 10-30 nm; the volume of these pores On the surface of the modified supports silica is distributed in the form of SiO x -fragments Si(OSi) 3 O and Si(OSi) 4 . This is indicated by the occurrence of the signals at −101 and −125 ppm on the 29 Si Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR) spectra ( Figure 5) [18,[21][22][23][24].…”
Section: Sio2-modification Of the Supportmentioning
confidence: 94%
“…The maximal temperature of ammonia desorption shifts to lower values ( Figure 7) indicating a decrease in strength of the acid sites. It is likely that the acid sites formed are hydroxyl groups bonded to the silicon atoms and the Lewis acid sites of various structures [21,24]. For example, Iengo et al [21] suggested, that the new It is likely that the acid sites formed are hydroxyl groups bonded to the silicon atoms and the Lewis acid sites of various structures [21,24].…”
Section: Sio2-modification Of the Supportmentioning
confidence: 99%
See 1 more Smart Citation