以TaCl5和Na2 WO4为原料，采用水热法在170℃保温6h~48h合成钽掺杂球形氧化钨。利用XRD、SEM等手段对产物进行物相、形貌表征。研究表明：水热反应时间为6 h~48 h均能获得三斜晶型的氧化钨球，球体尺寸在200 nm~350 nm之间。对不同反应时间条件下合成的氧化钨球进行紫外-可见光的吸收光谱分析可知，随着反应时间的增加，获得钽掺杂氧化钨样品对光的吸收能力增强，平均禁带宽度为3．72 eV。

Global tungsten oxide doped with tantalum were synthesized by a facile hydrothermal method using TaCl5 and Na2 WO4 as raw materials at 170℃ for 6h ~48h. The samples of the products were characterized by XRD,SEM and IR. The results showed that the global tungsten oxide powders with the pure triclinic phase in the grain size range from 200 to 350 nm can be synthesized at 6 h~48 h at 170℃. The optical absorption preoperties of the samples were characterized by UV-VIS. As the reaction time increasing,the optical absorption of synthesized global tungsten oxide doped with addition of tantalum increased gradually,and the average band gap was 3. 72eV.

以TaCl5、Na2WO4·2H2O及C6H6O12为原料,采用水热法在140℃~200℃保温48h合成钽掺杂球形氧化钨。利用XRD、SEM等手段对产物进行物相、形貌进行表征。研究表明:水热反应温度140℃~200℃为均能获得三斜晶型的氧化钨球,球体尺寸在2~3μm之间。对不同反应温度条件下合成的氧化钨球进行紫外-可见光的吸收光谱分析可知,平均禁带宽度为3.73e V,在170℃水热条件下获得样品对光的吸收性能最好。该样品在高温煅烧后,形貌发生较大的变化。

Global tungsten oxide doped with tantalum were synthesized by a facile hydrothermal method using TaCl5 , Na2 WO4 ? 2H2 O and C6 H12 O6 as raw materials at 140℃ ~200℃ for 48 h. The samples of the products were characterized by XRD and SEM. The results show that the global tungsten oxide powders with the pure triclinic phase in the grain size range from 2 to 3 μm can be synthesized at 48h at 140℃ ~200℃. The optical absorption preoperties of the samples were characterized by UV-Vis,global tungsten oxide doped with tantalum powder prepared at 170℃ had an optimal optical absorption,and the average band gap and the specific surface area was 3. 73 eV. Morphology of the product cannot remain is found after sintering at high temperature.

采用磷钨酸和硝酸铜为原料合成磷钨酸铜,以磷钨酸铜为催化剂,H2O2为氧化剂应用于模拟油氧化脱硫反应。考察了不同的氧化脱硫体系、反应温度、催化剂质量、H2O2的体积和反应时间对脱硫效果的影响。结果表明,H2O2/磷钨酸铜/十六烷基三甲基溴化铵（CTAB）体系具有最高的脱硫率,当反应的温度为40℃,催化剂的质量为0.01g,H2O2加入体积为0.5mL,反应的时间为1h,二苯并噻吩的脱除率为93%,催化剂循环使用5次后,脱硫率没有明显下降。

Cpper phosphotungstate was synthesize by phosphotungstic acid and nitric acid copper as raw materials .Oxidative desulfurization reaction of model oil was studied by copper phosphotungstate as catalyst and H2 O2 as oxidant .The experiment indicate various oxidative desulfurization system ,reaction temperature ,catalytic amount ,amount of hydrogen peroxide and reaction time influenced on oxidative desulfurization effect .The results show that a combined copper phosphotungstate ,CTAB and H2 O2 could lead to a good conversion of DBT .Reaction temperature was 40 ℃ ,catalytic amount was 0 .01 g ,volume of hydrogen peroxide was 0 .5 mL ,reaction time was 1 h ,which made conversion rate of dibenzothiophene up to 93% . The catalyst may was recycled five times and desulfurization effecience of mode oil isn''t decreased .

以钨酸钠和硝酸铜为原料,通过水热合成反应及550℃/1.5 h焙烧得到氧化钨铜复合粉体,氢气还原后获得W-20%Cu复合粉体,采用X射线衍射（XRD）、扫描电镜（SEM）和高分辨透射电镜（HTEM）,对该复合粉体的组织与结构进行表征。结果表明：采用水热合成法制备氧化钨铜的前驱体时混合溶液应调整为碱性,最好将pH值控制在9,水热反应产物主要是由CuWO4·2H2O与Cu2WO4（OH）2组成的复合络合物;550℃温度下焙烧时水热合成产物完全分解为由WO3、CuO和CuWO4-x组成的复合氧化物,粒度在2~5μm之间,分布均匀;复合氧化物在700~900℃下氢气还原成为典型的铜包钨结构的钨铜复合粉体,呈规则球形,晶粒度在70 nm左右,钨铜分布均匀,两相一体,保留了溶液中分子级的混合状态。

The W-Cu oxide precursor composite powders were fabricated by hydrothermal synthesis method and 550 ℃/1.5 h calcination using sodium tungstate and copper nitrate as raw materials, and the W-20%Cu composite powders were obtained through hydrogen reduction. The microstructures of the prepared powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HTEM). The results show that the mixed solution should be adjusted for alkaline;pH value should be controlled at 9 when the W-Cu oxide precursor is prepared by hydrothermal synthesis method. The hydrolyzates are mainly consist of CuWO4·2H2O and Cu2WO4(OH)2, and can be completely decomposed into the oxide composite powders composed of WO3, CuO and CuWO4-x when calcinating at 550℃. The oxide composite powders particles distribute uniformly, and the particle size is about 2~5μm. Moreover, W-Cu composite powders can be reduced at 700~900℃. The mor

以双氧水为氧化剂、磷钨酸？半焦（HPW？Sc）为催化剂、N-甲基吡咯烷酮为萃取剂、Span60为乳化剂，对以苯并噻吩（BT）、二苯并噻吩（DBT）、4，6-二甲基二苯并噻吩（4，6-DMDBT）为模型含硫化合物的模拟油进行氧化脱硫研究，考察磷钨酸负载量、氧化温度、氧化反应时间和模拟油中烯烃、芳烃和含氮化合物对含硫化合物脱除效果的影响。结果表明：催化剂的最佳磷钨酸负载量（w）为30％；在反应时间为60 min、反应温度为60℃、HPW？Sc2用量（w）为1.0％、Span60用量（w）为0.36％、n（H2 O2）？n（S）＝3的条件下，DBT脱除率可达到99％，含硫化合物的氧化活性由大到小的顺序为 DBT＞4，6-DMDBT＞BT；模拟油中的苯可促进 DBT的脱除，而喹啉和环己烯则抑制DBT的脱除。

Oxidative desulfurization of benzothiophene(BT,DBT and 4,6-DMDBT)in simulated oil was investigated using hydrogen peroxide as oxidant,Span60 as emulsifier,N-methyl pyrrolidone as ex-tractant and phosphotungstic acid?semi-coke (HPW?Sc)as catalyst.The HPW?Sc catalysts were charac-terized by FT-IR.The effect of HPW loading amount,reaction temperature,reaction time,and aromat-ics,olefins and nitrogen compounds on desulfurization rate was studied.The results show that the sul-fur removal efficiency of DBT reaches above 99% using the catalyst with 30% HPW loading at the con-ditions of temperature of 60 ℃,reaction time of 60 min,amount of catalyst 1.0%,n(H2O2)?n(S)=3, amount of Span60 emulsifier 0.36%,and the oxidative activity of the model sulfur compounds follows the order of DBT>4,6-DMDBT>BT. The benzene in the test oil can promote DBT desulfurization, while quinoline and cyclohexene inhibit the removal of DBT.