Catalytic decomposition of sulfuric acid on composite oxides and Pt/SiC
Catalytic decomposition of sulfuric acid on composite oxides and Pt/SiC
复制标题
硫酸在复合氧化物和 Pt/SiC 上的催化分解
DOI：
10.1016/j.ijhydene.2011.04.064
复制
发表时间：
2012
影响因子：
7.2
通讯作者：
Xu, J. M.
中科院分区：
文献类型：
--
作者：
Zhang, P.;Su, T.;Chen, Q. H.;Wang, L. J.;Chen, S. Z.;Xu, J. M.
热化学碘硫循环以其高效、无co2信用额是最有前途的大规模制氢方法之一。构成IS循环的三个反应之一硫酸的分解反应在动力学上非常缓慢，需要在催化剂的存在下进行。本文制备了铬铁矿铜（CuCr2O4）和铁氧体铜（CuFe2O4）作为硫酸分解催化剂，测试了它们在不同空速和温度下的活性，并测试了它们的寿命。为了克服Pt/Al2O3长时间运行不稳定的缺点，将Pt负载在SiC上，并与cucr2o4和CuFe2O4的活性和寿命进行了比较。结果表明，cucr2o4在高温下具有最高的催化活性，而Pt/SiC具有最好的稳定性。此外，还探讨了这些催化剂失活的原因。认为失活的主要原因是硫酸盐的生成、团聚和比面积的减小。
Thermochemical iodine–sulfur (IS) cycle is one of the most promising massive hydrogen production methods with its high efficient and CO2free credits. The decomposition reaction of sulfuric acid, one of the three reactions of which IS cycle is composed, is kinetically very slow and needs to proceed in the presence of catalyst. In this work, copper chromite (CuCr2O4) and copper ferrite (CuFe2O4) were prepared and employed as the catalysts for sulfuric acid decomposition, their activities were tested at various space velocities and temperatures, and their lifetimes were tested. To overcome the shortcoming of instability in long-time operation of Pt/Al2O3, Pt was loaded on SiC and its activity and lifetime were evaluated and compared with those of CuCr2O4and CuFe2O4. Results showed that CuCr2O4has the highest catalytic activity at higher temperature, while Pt/SiC presented the best stability. In addition, the reasons for the deactivation of these catalysts were explored. It was proposed that the deactivation was attributed to formation of sulfate, agglomeration and specific area decreasing.
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影响因子：
5.5
作者：
Abimanyu, Haznan;Jung, Kwang-Deog;Yoo, Kye Sang
通讯作者：
Yoo, Kye Sang
DOI：
10.1016/j.cattod.2008.03.029
发表时间：
2007-08
期刊：
--
影响因子：
--
作者：
S. Rashkeev;D. Ginosar;L. Petkovic;H. Farrell
通讯作者：
S. Rashkeev;D. Ginosar;L. Petkovic;H. Farrell
影响因子：
7.2
作者：
D. Ginosar;L. Petkovic;A. Glenn;K. Burch
通讯作者：
D. Ginosar;L. Petkovic;A. Glenn;K. Burch
影响因子：
5.5
作者：
Youquan Deng;L. An
通讯作者：
Youquan Deng;L. An
影响因子：
7.2
作者：
A. Banerjee;M. Pai;K. Bhattacharya;A. Tripathi;V. S. Kamble;S. Bharadwaj;S. K. Kulshreshtha
通讯作者：
A. Banerjee;M. Pai;K. Bhattacharya;A. Tripathi;V. S. Kamble;S. Bharadwaj;S. K. Kulshreshtha