Characterization of V2O5/MgO catalysts

被引：17

作者：

Yurdakoc, MK ^{[1
]}

Haffner, R ^{[1
]}

Honicke, D ^{[1
]}

机构：

[1] UNIV KARLSRUHE,ENGLER BUNTE INST,D-76128 KARLSRUHE,GERMANY

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1996年 / 44卷 / 03期

关键词：

catalysts; magnesia-supported vanadium oxide; alkanes;

D O I：

10.1016/0254-0584(96)80068-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Some properties of impregnated and grafted V2O5/MgO catalysts were investigated by the aid of Fourier transform infrared spectrometry (FTIR), X-ray diffraction (XRD), laser Raman spectroscopy (LRS), temperature programmed reduction (TPR) and Brunauer, Emmett, and Teller (BET) surface area measurements. It can be seen that crystalline V2O5 was not detected at relatively low V2O5 contents by FTIR and XRD on MgO-supported catalysts. Evidence from Raman spectroscopy and TPR indicated in some respects that various types of vanadia species were found to be present in MgO: monomeric vanadyls, one- and/or two-dimensional vanadate chains and crystallites of V2O5 at high V2O5 content only. Also, it is difficult to identify clearly the formation of the 'three-dimensional' binary oxide Mg2V2O7 for these types of catalysts.

引用

页码：273 / 276

页数：4

共 23 条

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