In regular long pore channels XRD patterns with SBA-15 hexagonal opening, high intensity 100 in the low angle region and low intensity 110 and 200 hkl plane peaks are observed at Brag angles slightly higher than this plane angle. The following low angle XRD patterns, 77 K nitrogen adsorption isotherms (in mmol nitrogen/gr solids) and TEM images were obtained in the study in which the pH effect (at pH=1.0 and pH=2.0 conditions) on zirconium (Zr) loading by hydrothermal synthesis was investigated. a) Interpret how the pH increase changes the SBA-15 regular pore (Crystal) structure according to the XRD behavior. b) Which sample has the highest total pore volume? What is the adsorbed mmol/g solid amount?) c) Which sample has the highest micropore volume? What is the adsorbed mmol/g solid amount?) d) Which of the SBA-15 structure features can you comment on in TEM images, please explain by showing them on the figure.
In regular long pore channels XRD patterns with SBA-15 hexagonal opening, high intensity 100 in the low angle region and low intensity 110 and 200 hkl plane peaks are observed at Brag angles slightly higher than this plane angle. The following low angle XRD patterns, 77 K nitrogen adsorption isotherms (in mmol nitrogen/gr solids) and TEM images were obtained in the study in which the pH effect (at pH=1.0 and pH=2.0 conditions) on zirconium (Zr) loading by hydrothermal synthesis was investigated. a) Interpret how the pH increase changes the SBA-15 regular pore (Crystal) structure according to the XRD behavior. b) Which sample has the highest total pore volume? What is the adsorbed mmol/g solid amount?) c) Which sample has the highest micropore volume? What is the adsorbed mmol/g solid amount?) d) Which of the SBA-15 structure features can you comment on in TEM images, please explain by showing them on the figure.
University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter7: Quantum Mechanics
Section: Chapter Questions
Problem 7.1CYU: Check Your Understanding If a=3+4i , what is the product a* a?
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Transcribed Image Text:In regular long pore channels XRD patterns with SBA-15 hexagonal
opening, high intensity 100 in the low angle region and low intensity
110 and 200 hkl plane peaks are observed at Brag angles slightly
higher than this plane angle.
The following low angle XRD patterns, 77 K nitrogen adsorption
isotherms (in mmol nitrogen/gr solids) and TEM images were
obtained in the study in which the pH effect (at pH=1.0 and pH=2.0
conditions) on zirconium (Zr) loading by hydrothermal synthesis was
investigated.
a) Interpret how the pH increase changes the SBA-15 regular pore
(Crystal) structure according to the XRD behavior.
b) Which sample has the highest total pore volume? What is the
adsorbed mmol/g solid amount?)
c) Which sample has the highest micropore volume? What is the
adsorbed mmol/g solid amount?)
d) Which of the SBA-15 structure features can you comment on in
TEM images, please explain by showing them on the figure.
100 nm
100 nm
-SBA-15-2
SBA-15-1
-ZI-SBA-15-2
Z-SBA-15-T
I 1.5 2
2.5 3
20 (")
0.5
3.5
(a)
(b)
70
60
50
40
30
20
(c)
(d)
100 nm
100 nm
02
0.4
0.6
PP.
0.8
Fie HRM ing AIS, AIS. to SAI52 d AI52
SBA-15-2-SBA-15-1+Z-SBA-15-2 +Zr-SBA-15-1
N, adsorbed amount (mmol/g)
is
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