采用均匀沉淀法制备纳米ZnO,以其作为低温脱除H2S的活性组分,考察了纳米ZnO粒径、空速、反应温度、氧分压等因素对纳米ZnO脱硫性能的影响,并对脱硫剂的结构进行了表征.结果表明:在常压、低温、氧分压较低的条件下,粒径越小脱硫性能越强,260℃焙烧制得的纳米ZnO脱硫剂具有高的脱硫活性,H2S可选择性地被氧化为单质S,转化率高达100%,脱硫活性时间是分析纯ZnO的40倍.尾气中未见SO2产生.
参考文献
| [1] | 王睿.磷钼杂多化合物脱硫热力学可行性与硫磺生成机理研究[J].高等学校化学学报,2002(02):303-305. |
| [2] | Nicolas Keller;Cuong Pham-Huu;Claude Estournes;Marc J. Ledoux .Low temperature use of SiC-supported NiS_2-based catalysts for selective H_2S oxidation Role of SiC surface heterogeneity and nature of the active phase[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2002(1/2):191-205. |
| [3] | 高志华,阴丽华,李春虎,谢克昌.纳米α-FeOOH催化剂一段法脱除COS和H2S性能的研究[J].燃料化学学报,2003(03):249-253. |
| [4] | 田增淳二 .活性炭ヘのオゾン注入によるH2Sの除去[J].臭氮研究,2001,32(01):1-6. |
| [5] | ADIB F;BAGREEV A;BANDOSZ T J .Effect of pH and surface chemistry on the mechanism[J].Journal of Colloid and Interface Science,1999,216(02):360-369. |
| [6] | Nicolas Keller;Cuong Pham-Huu;J.Ledoux .Continuous process for selective oxidation of H_2S over SiC-supported iron catalysts into elemental sulfur above its dewpoint[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2001(1/2):205-217. |
| [7] | Pineda M;PALACIOS J M;ALONSO L et al.Performanceofzincoxidesorbentsforhotcoalgasdesulfurizationinmulticycletestsinafixedbedreactor[J].Fuel,2000,79(08):885-895. |
| [8] | Dijken A V;MEULENKAMP E A;VANMAEKELBERGH D;DIJKEN A V MEULENKAMP E A VANMAEKELBERGH D .The kinetics of the radiative and nonradiative processes in nanocrystalline ZnO particles upon photoexcitation[J].Journal of Physical Chemistry B,2000,104:1715-1723. |
| [9] | 井立强,郑莹光,徐自力,董凤霞,孙晓君,蔡伟民,徐英凯.ZnO超微粒子的EPR特性和光催化性能[J].高等学校化学学报,2001(11):1885-1888. |
| [10] | 大连理工大学无机化学教研室.无机化学[M].北京:高等教育出版社,1990 |
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