Catalysis by Ceria and Related Materials - download pdf or read online

By Alessandro Trovarelli, Paolo Fornasiero (eds.)

ISBN-10: 1848169639

ISBN-13: 9781848169630

This ebook follows the 2002 version of Catalysis by means of Ceria and similar Materials, which was once the 1st publication totally dedicated to ceria and its catalytic homes. within the ten years because the first version a big quantity of labor has been conducted within the box, and ceria has won a favorite place in catalysis as probably the most helpful fabric for numerous purposes. This moment variation covers basic and utilized points of the newest advances in ceria-based fabrics with a unique specialise in structural, redox and catalytic positive aspects. distinctive emphasis is given to nano-engineered and nano-shaped structures that are a key think about the predictive and rational layout of ceria with novel houses.

moreover, the booklet provides contemporary advances in rising and conventional large-scale functions of ceria in catalysis, comparable to the therapy of emissions from cellular resources (including diesel and gas engines). the first readership comprises catalysis and fabric technological know-how researchers from academy and and postdoctorate and graduate scholars in chemistry, chemical engineering and physics.

Readership: Graduate scholars and researchers within the fields of chemistry, physics, fabrics technological know-how and chemical engineering.

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B, 75 (2007) 045121-1–10. 68. , Appl. Phys. , 90 (2007) 031909-1–3. 69. , Phys. Rev. B, 59 (1999) 4044–4052. indd 43 4/8/2013 12:25:23 PM b1469 44 Catalysis by Ceria and Related Materials M. Yashima 70. , Phys. Rev. B, 71 (2005) 064301-1–7. 71. , Phys. Rev. B, 72 (2005) 144107-1–9. 72. , J. Am. Ceram. , 84 (2001) 1169–1171. 73. , Acta Crystallogr. B, 61 (2006) 161–164. 74. , J. Am. Ceram. , 89 (2006) 1395–1399. 75. , Solid State Ionics, 179 (2008) 797–803. 76. , J. Ceram. Soc. , 117 (2009) 1055–1059.

The third band (arrow) is a good indication of the tetragonal phase. 23 Copyright 1994 John Wiley & Sons. 14 The aF and cF parameters approach each other with an increase of x, which leads to a decrease of the axial ratio c/ aF. Yashima41 studied the crystal structures of tetragonal and cubic CexZr1-xO2 materials using DFT calculations, which also gave a decrease of the axial ratio c/aF with ceria composition x. 24 Both the c/aF ratio and oxygen displacement decrease with ceria content x. 6, which suggests that the t′–t″ transformation is a first-order transition.

Yellow and green spheres are Ce and Zr atoms, respectively. Pink/purple spheres in (a) and (c) are oxygen atoms. The arrows along the c axis in (a) indicate the direction of oxygen displacement from the ideal fluorite 8c position. 148 Å−3, respectively. 41 Copyright 2009 ACS. 72 The oxygen atoms are displaced from the regular position (z = 1/4) (Fig. 41 The oxygen displacement yields longer and shorter Zr–O interatomic distances. Covalent bonds between the Zr and O atoms are observed for the shorter Zr–O bond in the calculated valence-electron density map (Fig.

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Catalysis by Ceria and Related Materials by Alessandro Trovarelli, Paolo Fornasiero (eds.)


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