Electronic polarizability and optical basicity of lanthanide oxides

Zhao, Xinyu; Wang, Xiaoli; Lin, Hai; Wang, Zhiqiang

doi:10.1016/j.physb.2006.11.015

Cited by 172 publications

(44 citation statements)

References 15 publications

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“…Refractive index (n), density (ρ) and molecular mass are used to measure the molar refraction (R m ) [18] as given below,…”

Section: Ion Concentrationmentioning

confidence: 99%

“…Molar refractivity is related to the structure of the glass network and is proportional to the molar electronic polarizability of the material (α m ) by the Clasius-Mosotti relation [18].…”

Section: Ion Concentrationmentioning

confidence: 99%

“…From Table 2, it is observed that the polarizability increases with molar refractivity and refractive index, which indicate that the refractive index of the prepared glass samples depends not only on the density but also on the polarizability of the glass. The metallization criterion which give the information about the non-metallic nature of the solid and is calculated by using the below relation [18].…”

Section: Ion Concentrationmentioning

confidence: 99%

See 2 more Smart Citations

Optical and luminescence properties of Li2O Gd2O3MO B2O3Sm2O3 (MO Bi2O3, BaO) glasses

Zaman

Kaewkhao

Rooh

et al. 2016

Journal of Alloys and Compounds

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“…Refractive index (n), density (ρ) and molecular mass are used to measure the molar refraction (R m ) [18] as given below,…”

Section: Ion Concentrationmentioning

confidence: 99%

Section: Ion Concentrationmentioning

confidence: 99%

Section: Ion Concentrationmentioning

confidence: 99%

See 1 more Smart Citation

Optical and luminescence properties of Li2O Gd2O3MO B2O3Sm2O3 (MO Bi2O3, BaO) glasses

Zaman

Kaewkhao

Rooh

et al. 2016

Journal of Alloys and Compounds

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“…The data for cation polarizabilities are taken from Refs. [3] and [37]. X Gd 2 O 3 , X WO 3 , and X Table 2.…”

Section: Electronic Polarizability Optical Basicity and Interactionmentioning

confidence: 99%

Electronic polarizability and interaction parameter of gadolinium tungsten borate glasses with high WO3 content

Taki

Shinozaki

Honma

et al. 2014

Journal of Solid State Chemistry

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“…Several attempts have been made to link the activity of a catalyst with the physical and chemical properties of the associated cations and these include: ionic radius [35], ionic potential [34], electronegativity [95][96][97][98][99][100][101], enthalpy of oxide formation [99,102,103], electronic polarisability [95,104,105] and optical basicity [106][107][108][109][110][111][112][113]. All of these parameters are listed in Table 9.…”

Section: Investigation Into Correlationsmentioning

confidence: 99%

Comprehensive Study of Isobutane Selective Oxidation Over Group I and II Phosphomolybdates: Structural and Kinetic Factors

Kendel

Brown

2011

Catal Lett

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Various phosphomolybdates were synthesized using cations from Groups 1 and 2 of the periodic table. These compounds were of the form M x H 3-xn [PMo 12 O 40 ], with n being the cationic charge (?1 or ?2). XRD analysis shows pure phosphomolybdic acid has a triclinic structure. A body centered cubic (BCC) structure gradually develops with addition of Group 1 cations, and the triclinic phase is completely replaced by the BCC phase once metal cations occupy a volume greater than 9-11 Å 3 per phosphomolybdate anion. The Group 2 compounds do not form a cubic phase, however the triclinic phase distorts once cationic volume is greater about 5 or 6 Å 3 and appears to become somewhat amorphous. Isobutane selective oxidation over the compounds yielded methacrolein (primary product), 3-methyl-2-oxetanone (lactone), acetic acid, propene, methacrylic acid, carbon dioxide and water as products. Propene was formed over the Group 1 compounds exclusively and methacrylic acid formation was observed with BaH[PMo 12 O 40 ] only. Products form via two distinct processes: Category 1 product has an exponential profile and coverage is consistent with a Langmuir model, Category 2 formations are consistent with desorptions from within the bulk of the substrates. Methacrolein forms via both Category 1 and 2 processes, whilst all other products are formed by Category 2 exclusively. A rigorous kinetic analysis yielded accurate activation parameters. Category 1 methacrolein formation apparent activation energies ranged from 34.7 ± 1.3 to 119 ± 4 kJ mol -1 . Category 2 formations ranged from 34.3 ± 0.4 to 726 ± 172 kJ mol -1 . No relationship between activity and composition or structure could be ascertained, despite investigation into correlations using several different models.

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Electronic polarizability and optical basicity of lanthanide oxides

Cited by 172 publications

References 15 publications

Optical and luminescence properties of Li2O Gd2O3MO B2O3Sm2O3 (MO Bi2O3, BaO) glasses

Optical and luminescence properties of Li2O Gd2O3MO B2O3Sm2O3 (MO Bi2O3, BaO) glasses

Electronic polarizability and interaction parameter of gadolinium tungsten borate glasses with high WO3 content

Comprehensive Study of Isobutane Selective Oxidation Over Group I and II Phosphomolybdates: Structural and Kinetic Factors

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