太阳能热化学分解水是一种高效生产清洁和可再生氢能源的方法.由于出色的催化活性和太阳能燃料生产能力,钙钛矿型的催化剂在热化学领域引起了强烈关注.我们采用改良的Pechini法合成了一系列钙铝掺杂的镧锰钙钛矿并系统考察了其在两步法热化学分解水中的产氢表现.为了优化热化学催化性能,我们进行了镧锰钙钛矿A,B位上钙和铝的掺杂量(从0.2到0.8)的详细考察.通过调整掺杂比例,得到了一种极其高效的钙钛矿催化剂La_(0.6)Ca_(0.4)Mn_(0.6)Al_(0.4)O_3.当两步法热化学分解水在1400和1000°C之间,La_(0.6)Ca_(0.4)Mn_(0.6)Al_(0.4)O_3取得了429μmol/g的出色产氢表现,比同等条件下基准催化剂氧化铈产氢结果高出8倍.与此同时,钙铝掺杂镧锰钙钛矿在两步法热化学循环测试中展现出极其稳定的催化活性.因此,这种新颖的钙铝掺杂镧锰钙钛矿具备巨大的潜质用于未来热化学太阳能燃料的实际生产. Solar Thermochemical Hydrolysis Water is a method of efficient production of clean and renewable hydrogen energy. Due to its excellent catalytic activity and solar fuel productivity, perovskite-type catalysts have attracted much attention in the field of thermochemistry. We use a modified Pechini A series of Ca-Al-doped lanthanum manganese perovskites were synthesized and investigated systematically for their hydrogen production in a two-step pyrolytic decomposition water. In order to optimize the thermochemical catalytic performance, we carried out the lanthanum manganese perovskite A, A detailed investigation of the doping amount of calcium and aluminum (from 0.2 to 0.8) at position B was carried out.An extremely efficient perovskite catalyst La_ (0.6) Ca_ (0.4) Mn_ (0.6) Al_ (0.4) O_3.While the two-step thermochemical decomposition of water at 1400 and 1000 ° C, La_ (0.6) Ca_ (0.4) Mn_ (0.6) Al_ (0.4) O_3 obtained excellent hydrogen production performance of 429μmol / Which is 8 times higher than that of the benchmark catalyst cerium oxide under the same conditions.At the same time, the calcium-aluminum-doped lanthanum manganese perovskite exhibits extremely stable catalytic activity in the two-step thermochemical cycle test.Therefore, this Novel calcium-aluminum-doped lanthanum-manganese-perovskite possesses great potential for future thermochemical solar combustion The actual production of materials.