Synergetic Effect between NaCl and B2O3 in Modified FeOx Catalysts
Xiong Guoxing; Xia Xinrui; Chen Hengrong; Guo Xiexian
KeywordNacl/b2o3/feox Catalysts Synergetic Effect Oxidative Coupling Of Methane Xps H-2-tpr And O-2-tpd
Indexed BySCI
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
AbstractA series of NaCl/B2O3/Fe2O3 catalysts having a B/Fe atomic ratio from 0 to 0.3 and 0.25 of Na/Fe atomic ratio were prepared for the oxidative coupling of methane (OCM). It was noted that NaCl and B2O3 show a synergetic effect: NaCl/Fe2O3 produces mainly CO2, but B2O3/Fe2O3 and B2O3/NaCl have poor activity. NaCl/B2O3/Fe2O3 catalyst has however high activity and selectivity. When the addition of B2O3 approaches 15 (at)%, the C-2 yield and selectivity reach their maxima, 17% and 75% respectively. The C2H4/C-2 ratio is as high as 76%. XRD, XPS, H-2-TPR, O-2-TPD and In - situ Mossbauer were employed to investigate the properties of the catalysts. Results show there is a synergetic effect between NaCl and B2O3 and FeOx surface. B2O3 modifies the redox ability of Fe2O3. The NaCl modified B2O3/FeOx has high reduction and lattice oxygen evaporation rates at 750 degrees C. The high activity and selectivity of the NaCl/B2O3/FeOx catalyst are closely related with this synergetic effect.
WOS IDWOS:000207589800003
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Document Type期刊论文
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Xiong Guoxing,Xia Xinrui,Chen Hengrong,et al. Synergetic Effect between NaCl and B2O3 in Modified FeOx Catalysts[J]. ACTA PHYSICO-CHIMICA SINICA,1994,10(11):971-977.
APA Xiong Guoxing,Xia Xinrui,Chen Hengrong,&Guo Xiexian.(1994).Synergetic Effect between NaCl and B2O3 in Modified FeOx Catalysts.ACTA PHYSICO-CHIMICA SINICA,10(11),971-977.
MLA Xiong Guoxing,et al."Synergetic Effect between NaCl and B2O3 in Modified FeOx Catalysts".ACTA PHYSICO-CHIMICA SINICA 10.11(1994):971-977.
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