Hydrothermal synthesis of novel crystalline Mo-V-M-O (M = Al, Ga, Fe) mixed oxide in the presence of triethylammonium chloride and their catalytic performance for selective ethane oxidation
Hydrothermal synthesis of novel crystalline Mo-V-M-O (M = Al, Ga, Fe) mixed oxide in the presence of triethylammonium chloride and their catalytic performance for selective ethane oxidation
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三乙基氯化铵存在下水热合成新型结晶Mo-V-M-O（M = Al，Ga，Fe）混合氧化物及其对乙烷选择性氧化的催化性能
DOI：
10.1016/s0920-5861(01)00451-5
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发表时间：
2001
期刊：
影响因子：
5.3
通讯作者：
W. Ueda
中科院分区：
文献类型：
--
作者：
Kenzo Oshihara;Yasuhiro Nakamura;Mayumi Sakuma;W. Ueda
以Anderson型杂多酸盐和硫酸氧钒为原料，在（C2 H5）3 NHCl存在下，于175°C水热合成了新型晶态Mo-V-M-O（M=Al，Ga，Fe）复合氧化物。所得Mo 6V 2Al 1 Ox混合氧化物为棒状晶体，X射线衍射（Cu Kα）峰位于2θ=4.7 °和8.2°，表明在棒状晶体的横截面上形成了超结构。所合成的Mo-V-M-O（M=Al，Ga，Fe）复合氧化物具有相同的六方晶胞结构，空间群为P6。将在N2流中在500°C下煅烧后的混合氧化物用于乙烷选择性氧化。在（C2 H5）3 NHCl存在下制备的催化剂比在不存在（C2 H5）3 NHCl的情况下制备的催化剂表现出更高的乙烷转化率和乙酸选择性。
Novel crystalline Mo–V–M–O (M=Al, Ga, Fe) mixed oxides were prepared by hydrothermal synthesis with Anderson-type heteropolymolybdate and vanadyl sulfate at 175°C in the presence of (C2H5)3NHCl. The obtained Mo6V2Al1Oxmixed oxide was rod-shaped crystal and the X-ray diffraction (Cu Kα) peaks at 2θ=4.7 and 8.2° were observed, which suggest a formation of a super structure in the cross-section of the rod-shaped crystal. The synthesized Mo–V–M–O (M=Al, Ga, Fe) mixed oxides were assumed the same structure of hexagonal unit cell of the space group P6. The mixed oxides after calcination in N2flow at 500°C were used for ethane selective oxidation. The catalysts prepared in the presence of (C2H5)3NHCl showed higher ethane conversion and selectivity to acetic acid than those prepared in the absence of (C2H5)3NHCl.