CAJ | 학술논문

采用程序升温脱附(TPD)实验技术测定了β-苯乙醇在5种多孔材料上的TPD曲线，并估算了它们的脱附活化能。同时还讨论了多孔材料的孔径结构和表面性质对β-苯乙醇吸附结合力的影响规律。结果表明：（1）β-苯乙醇在多孔材料上的脱附活化能（kJ/mol）由低到高依次为：B型硅胶（46.90）、SBA-15分子筛（56.16）、A型硅胶（67.92）、MCM-41分子筛（86.16）和XF型活性炭（91.87）；（2）除XF型活性炭外，吸附剂表面酸性基团的增加有利于增强其对β-苯乙醇的吸附结合力，β-苯乙醇在吸附剂上的脱附活化能随吸附剂表面酸性基团含量的升高而增大；（3）与其它几种多孔材料相比，XF型活性炭与β-苯乙醇之间因存在π键吸附使得吸附作用力增强，脱附活化能也较高。
채용정서승온탈부(TPD)실험기술측정료β-분을순재5충다공재료상적TPD곡선，병고산료타문적탈부활화능。동시환토론료다공재료적공경결구화표면성질대β-분을순흡부결합력적영향규률。결과표명：（1）β-분을순재다공재료상적탈부활화능（kJ/mol）유저도고의차위：B형규효（46.90）、SBA-15분자사（56.16）、A형규효（67.92）、MCM-41분자사（86.16）화XF형활성탄（91.87）；（2）제XF형활성탄외，흡부제표면산성기단적증가유리우증강기대β-분을순적흡부결합력，β-분을순재흡부제상적탈부활화능수흡부제표면산성기단함량적승고이증대；（3）여기타궤충다공재료상비，XF형활성탄여β-분을순지간인존재π건흡부사득흡부작용력증강，탈부활화능야교고。
Temperature programmed desorption (TPD) technique was applied to measure TPD curves ofβ-phenethyl alcohol on five types of porous materials, and desorption activation energy of phenethyl alcohol was estimated. Effects of pore structure and surface properties of these porous materials on desorption activation energy of phenyl ethyl alcohol were also discussed. Results showed that:(1) Desorption activation energy (kJ/mol) ofβ-phenethyl alcohol on porous materials was in the following order:silica gel B(46.90 kJ/mol)<SBA-15 molecular sieve(56.16 kJ/mol)<silica gel A(67.92 kJ/mol)<MCM-41 molecular sieve(86.16 kJ/mol)<activated carbon XF (91.87 kJ/mol);(2) With exception of activated carbon XF, the higher the surface acidic group content of an adsorbent, the stronger the interaction ofβ-phenethyl alcohol that adsorbent became, and the higher the desorption activation energy;(3) Since there was strongπ-Complexation betweenβ-phenylethyl alcohol and activated carbon, desorption activation energy ofβ-phenethyl alcohol on activated carbon was higher compared to that on other porous materials.