CAJ | 학술논문

采用原位红外光谱技术，以 CO 作为探针分子研究了加氢脱硫 CoMo/Al2O3-SiO2催化剂的活性吸附位的变化规律。原位硫化温度范围为300~550℃，获得了 CoMo/Al2O3-SiO2催化剂的 MoS2（2110 cm-1）和 CoMoS （2070 cm-1）活性相在增加硫化温度过程中的转变规律。在 CoMo/Al2O3-SiO2催化剂中，当载体中 SiO2含量逐渐增加时，能够显著改变催化剂活性相的相对强度变化，表明载体中加入适量的 SiO2能够显著改变加氢脱硫CoMo/Al2O3-SiO2催化剂的载体与活性金属（Co 和 Mo）的相互作用，从而提高金属在加氢催化剂载体上的分散性能，产生更多活性吸附位。
채용원위홍외광보기술，이 CO 작위탐침분자연구료가경탈류 CoMo/Al2O3-SiO2최화제적활성흡부위적변화규률。원위류화온도범위위300~550℃，획득료 CoMo/Al2O3-SiO2최화제적 MoS2（2110 cm-1）화 CoMoS （2070 cm-1）활성상재증가류화온도과정중적전변규률。재 CoMo/Al2O3-SiO2최화제중，당재체중 SiO2함량축점증가시，능구현저개변최화제활성상적상대강도변화，표명재체중가입괄량적 SiO2능구현저개변가경탈류CoMo/Al2O3-SiO2최화제적재체여활성금속（Co 화 Mo）적상호작용，종이제고금속재가경최화제재체상적분산성능，산생경다활성흡부위。
The changes of active sites of CoMo/Al2O3-SiO2 hydrodesulfurization catalyst were studied by in-situ FTIR using CO as a probe molecule. The changes of MoS2(2 110 cm-1) phase and CoMoS(2 070 cm-1) mixed phase during sulfide temperature increasing from 300 ℃ to 550 ℃ were obtained. The results show that, the increase of the silica component in CoMo/Al2O3-SiO2 catalysts can contribute to the transformation of catalyst active phase; proper amount of silica component in the mixed supports can alter the interaction between the support and active metals to improve the dispersion of active metal on the mixed support and produce more active adsorption sites.