摘要
用Ｃ５以上的醇（伯醇、仲醇）还原ＶＯＰＯ４·２Ｈ２Ｏ制备了ＶＯＨＰＯ４·０．５Ｈ２Ｏ。用ＸＲＤ、ＩＲ、ＴＧ、ＳＥＭ对其进行了表征。讨论了不同醇与ＶＯＰＯ４·２Ｈ２Ｏ的作用机理和对生成产物ＶＯＨＰＯ４·０．５Ｈ２Ｏ晶型的影响。结果表明，ＶＯＰＯ４·２Ｈ２Ｏ经伯醇还原有利于ＶＯＨＰＯ４·０．５Ｈ２Ｏ的［２２０］晶面生长，正戊醇制备的ＶＯＨＰＯ４·０．５Ｈ２Ｏ晶型象玫瑰形，正辛醇和正癸醇制备的ＶＯＨＰＯ４·０．５Ｈ２Ｏ的晶型为扭曲片状集合；ＶＯＰＯ４·２Ｈ２Ｏ经仲醇还原有利于ＶＯＨＰＯ４·０．５Ｈ２Ｏ的［００１］晶面生长，其晶型为明显的片状。
The Precursor, VOHPO_4·0.5H_2O, is prepared by reducing VOPO_4·2H_2O with 1and 2C5～10 straight chain alcohols and characterized by using XRD, IR, TG, and SEM techniques.The principle of VOPO_4·2H_2O reduction with different alcohols and their influences on the morphology of VOHPO_4·0.5H_2O are discussed. Precursors prepared by reduction with 1alcohols comprise VOHPO_4·0.5H_2O crystals for which the reflection is virtually the only feature of the diffraction pattern, whereas those with 2alcohols give VOHPO_4·0.5H_2O crystals for which the reflection is the dominant feature of the diffraction pattern. The morphology of VOHPO4·0.5H_2O prepared with 1pentanol is roselike, whereas that of VOHPO_4·0.5H_2O prepared with 1octanol and 1decanol is the collection of distorfed and twisted platelet types. The morphology of VOHPO_4·0.5H_2O prepared from 2alcohols is apparently of platelet type.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
1998年第2期13-17,共5页
Natural Gas Chemical Industry
关键词
钒磷氧化物
催化剂
VOHPO4.0.5H2O
合成
VOPO_4·2H_2O,C^5+ alcohol, reduction, preparation, VOHPO_4·0.5H_2O, characterization
