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Volumn 113, Issue 42, 2009, Pages 18184-18190

Reaction mechanisms of H2 reduction and N2O decomposition on Fe/ZSM-5 zeolite: A density functional theoretical study

Author keywords

[No Author keywords available]

Indexed keywords

A-DENSITY; ADSORPTION ENERGIES; ADSORPTION MODES; B3LYP DENSITY FUNCTIONAL; DECOMPOSITION PROCESS; DECOMPOSITION REACTION; FE/ZSM-5; FE/ZSM-5 CATALYST; HIGH SPIN STATE; MODERATE TEMPERATURE; PARALLEL MODE; PRE-TREATMENT; REACTION ACTIVITY; REACTION MECHANISM; REDUCTION PROCESS; SPIN STATE; THEORETICAL STUDY; ZSM-5 ZEOLITES;

EID: 70449595494     PISSN: 19327447     EISSN: 19327455     Source Type: Journal    
DOI: 10.1021/jp906426j     Document Type: Article
Times cited : (12)

References (45)
  • 40
    • 70449596061 scopus 로고    scopus 로고
    • note
    • Apart from the default B3LYP/B1 method described in Section 2.2, another two basis sets were used to optimize the H2/ZFeIII-A structure. The Fe element in these two basis sets was treated the same, using the LANL2DZ effective core potential (ECP) and LANL2DZ basis set for the core and valence electrons, respectively. All of the other elements were described with the 6-31G(d) and 6-311++G(d,p) basis sets, and such combinations of ECP and basis sets were referred to as B3 and B4, respectively. The Ha-Hb, Fe-Hb, and Oa-Ha distances were optimized at 0.753, 2.304, and 2.767 Å by B1, 0.749, 2.441, and 2.930 Å by B3, as well as 0.755, 2.269, and 2.772 Å by B4, respectively. It was found that the calculated data of B3LYP/B1 and B3LYP/B4 methods are comparable. In addition, the geometries of the zeolite fragment obtained with the three different basis sets are quite similar to each other; e.g., the Fe-Oa distances were optimized at 1.669, 1.671, and 1.677 Å by B1, B3, and B4, respectively. Accordingly, the 6-31G(d) basis set is qualified to treat the zeolite structures, consistent with the results of N2O decomposition on Fe(II)/ ZSM-5 zeolite discussed in Section 3.2.1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.