无机化学学报
無機化學學報
무궤화학학보
JOURNAL OF INORGANIC CHEMISTRY
2012年
10期
2083-2090
,共8页
马辉%郭富丽%董丽娜%邓学彬%赵新华
馬輝%郭富麗%董麗娜%鄧學彬%趙新華
마휘%곽부려%동려나%산학빈%조신화
热收缩性质%晶体结构%Zr(WMo)1-x/2VxO8-x/2%固溶度
熱收縮性質%晶體結構%Zr(WMo)1-x/2VxO8-x/2%固溶度
열수축성질%정체결구%Zr(WMo)1-x/2VxO8-x/2%고용도
利用酸蒸气水热法合成了Zr(WMo)1-x/2VxO7-(OH)2· 2H2O(x=0.04,0.08,0.10,0.14,0.20,0.22,0.26,0.32)四方晶相固溶体.以此为前驱体,通过高温脱水和相转变法合成了立方相Zr(WMo)1-x/2VxO8-x/2(x=0.04,0.08,0.10,0.14,0.20,0.22)固溶体.立方Zr(WMo)1-x/2Vx8-x/2固溶体具有Pa3-空间群.Zr(WMo)1-x/2VxO8-x/2的平均晶体结构描述为按照化学计量的ZrV2O7结构与β-ZrWMoO8结构的叠加.ZrV2O7在立方ZrWMoO8中的固溶度为11 mol％；立方Zr(WMo)1-x/2VxO8-x/2固溶体的相变温度低于200 K；在200 K～573 K温度范围内具有负热膨胀系数；线热膨胀系数近似为常数.
利用痠蒸氣水熱法閤成瞭Zr(WMo)1-x/2VxO7-(OH)2· 2H2O(x=0.04,0.08,0.10,0.14,0.20,0.22,0.26,0.32)四方晶相固溶體.以此為前驅體,通過高溫脫水和相轉變法閤成瞭立方相Zr(WMo)1-x/2VxO8-x/2(x=0.04,0.08,0.10,0.14,0.20,0.22)固溶體.立方Zr(WMo)1-x/2Vx8-x/2固溶體具有Pa3-空間群.Zr(WMo)1-x/2VxO8-x/2的平均晶體結構描述為按照化學計量的ZrV2O7結構與β-ZrWMoO8結構的疊加.ZrV2O7在立方ZrWMoO8中的固溶度為11 mol％；立方Zr(WMo)1-x/2VxO8-x/2固溶體的相變溫度低于200 K；在200 K～573 K溫度範圍內具有負熱膨脹繫數；線熱膨脹繫數近似為常數.
이용산증기수열법합성료Zr(WMo)1-x/2VxO7-(OH)2· 2H2O(x=0.04,0.08,0.10,0.14,0.20,0.22,0.26,0.32)사방정상고용체.이차위전구체,통과고온탈수화상전변법합성료립방상Zr(WMo)1-x/2VxO8-x/2(x=0.04,0.08,0.10,0.14,0.20,0.22)고용체.립방Zr(WMo)1-x/2Vx8-x/2고용체구유Pa3-공간군.Zr(WMo)1-x/2VxO8-x/2적평균정체결구묘술위안조화학계량적ZrV2O7결구여β-ZrWMoO8결구적첩가.ZrV2O7재립방ZrWMoO8중적고용도위11 mol％；립방Zr(WMo)1-x/2VxO8-x/2고용체적상변온도저우200 K；재200 K～573 K온도범위내구유부열팽창계수；선열팽창계수근사위상수.
