CAJ | 학술논문

以 NaY、液相 Ce 离子交换改性的 Y 型分子筛(L-CeY)为研究对象，运用 N2吸附、XRD、NH 3-TPD 和Py-FTIR 等实验方法表征两种 Y 型分子筛的物化性能。采用频率响应技术(FR)和智能重量分析仪(IGA)研究噻吩在两种分子筛上的吸附行为，并考察噻吩在稀土离子改性 Y 型分子筛上的不同吸附作用模式。结果表明，频率响应技术能够有效识别分子筛孔道内发生的不同传质过程。噻吩在 NaY 分子筛上的吸附行为较为简单，存在孔道吸附和π电子相互作用两种吸附过程；而在 L-CeY 分子筛上吸附行为较为复杂，同时存在孔道吸附和“S-M”吸附等多种吸附过程，另外，在高温条件下，还存在复杂的催化反应过程。
이 NaY、액상 Ce 리자교환개성적 Y 형분자사(L-CeY)위연구대상，운용 N2흡부、XRD、NH 3-TPD 화Py-FTIR 등실험방법표정량충 Y 형분자사적물화성능。채용빈솔향응기술(FR)화지능중량분석의(IGA)연구새분재량충분자사상적흡부행위，병고찰새분재희토리자개성 Y 형분자사상적불동흡부작용모식。결과표명，빈솔향응기술능구유효식별분자사공도내발생적불동전질과정。새분재 NaY 분자사상적흡부행위교위간단，존재공도흡부화π전자상호작용량충흡부과정；이재 L-CeY 분자사상흡부행위교위복잡，동시존재공도흡부화“S-M”흡부등다충흡부과정，령외，재고온조건하，환존재복잡적최화반응과정。
The physical and chemical properties of NaY zeolites and liquid phase cerium ion exchanged Y zeolites (L-CeY) were characterized by XRD,N2 adsorption,NH 3-TPD,and in-situ Py-FTIR.The adsorption behavior of thiophene on NaY and L-CeY zeolites was studied by using frequency response (FR)technique and intelligent gravimetric analyzer (IGA),and the different adsorption models of thiophene on Y zeolites modified by rare earth metal were investigated simultaneously.The results indicate that different mass transfer processes in the micropores of these zeolites can be validly identified by FR technique.The adsorption behavior of thiophene on NaY zeolites is relatively simple.Two mass transfer processes can be measured,containing channel adsorption and π electron interaction.While,the adsorption behavior of thiophene on L-CeY zeolites is relatively complex.Except for two adsorption processes of adsorption in micropores and"S-M"adsorption,complex catalytic reaction processes is also detected in L-CeY zeolites under the condition of high temperature.