1982
DOI: 10.1016/0021-9517(82)90100-2
|View full text |Cite
|
Sign up to set email alerts
|

Adsorption-desorption kinetics of H2 from supported nickel catalysts

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

0
4
0

Year Published

1982
1982
2024
2024

Publication Types

Select...
8

Relationship

0
8

Authors

Journals

citations
Cited by 52 publications
(4 citation statements)
references
References 24 publications
0
4
0
Order By: Relevance
“…Lee et al reported that the higher coverage of hydrogen atoms – the lower E des value of hydrogen atoms – was observed in the Ni/SiO 2 sample ( E des ranging from 89 kJ mol −1 at low coverage to 55 kJ mol −1 at high coverage). 37 Although the coverage of hydrogen atoms onto Ni is low in the Ni/a-Si 3 N 4 sample as shown in Fig. S6,† the E des value is interestingly lower in the Ni/a-Si 3 N 4 sample.…”
Section: Resultsmentioning
confidence: 95%
“…Lee et al reported that the higher coverage of hydrogen atoms – the lower E des value of hydrogen atoms – was observed in the Ni/SiO 2 sample ( E des ranging from 89 kJ mol −1 at low coverage to 55 kJ mol −1 at high coverage). 37 Although the coverage of hydrogen atoms onto Ni is low in the Ni/a-Si 3 N 4 sample as shown in Fig. S6,† the E des value is interestingly lower in the Ni/a-Si 3 N 4 sample.…”
Section: Resultsmentioning
confidence: 95%
“…The H 2 chemisorption was performed using a dynamic pulsed method. 15 After the sample was purged with an Ar stream (purity 99.99%, deoxygenated by an Alltech Oxy-trap filter) for 1.0 h at 473 K, which was below its crystallization temperature, H 2 pulses were injected at 303 K until the calculated areas of consecutive pulses were constant. According to H 2 chemisorption, the surface active area was calculated by assuming H/Ni (s) = 1 and a surface area of 6.5 × 10 −20 m 2 per Ni atom, based on an average of the area for the (100), (110) and (111) planes.…”
Section: Chemical Analysis and Characterizationmentioning
confidence: 99%
“…For instance, noble metals, being heavy elements with high atom volume and polarizability, tend to disperse well in the micropores of zeolites owing to their strong van der Waals interactions with the zeolite pore walls. 8 In contrast, lighter elements such as Ni, which are widely employed in hydrogenation processes because of their exceptional H 2 dissociation and chemisorption capabilities, [9][10][11] face challenges in achieving high dispersion on zeolite supports. 12 Ni species possess a large surface energy and low polarizability, which weaken their interactions with the pore walls of zeolite supports.…”
Section: Introductionmentioning
confidence: 99%