State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China.
State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China.
J Colloid Interface Sci. 2018 Dec 15;532:92-102. doi: 10.1016/j.jcis.2018.07.074. Epub 2018 Jul 19.
The mesoporous silicoaluminophosphate SAPO-11 materials were synthesized by using the green and low-cost sucrose as template. The SAPO-11 were characterized by SEM, TEM, N physisorption and FT-IR. Sucrose was incorporated into the crystal structure of SAPO-11 crystals to form secondary mesoporosity. Meanwhile, the mesoporous Mo/SAPO-11 samples with different MoO crystalline phases were synthesized. In addition, the pre-prepared optimal catalyst (with 3.6% molybdenum mass content) showed significantly high yield and durability for oxidative desulfurization (ODS). Interestingly, the yield of α-MoO composites was more than twice that of pure mesoporous SAPO-11 samples, due to the synergistic effect of secondary mesoporosity and molybdenum oxide. Then, the ODS reaction products were determined by GC-MS and H NMR. The leaching of active species in the liquid under the reaction conditions were evaluated. Besides, the kinetic properties were studied to calculate the activation energy of the reaction, and then a plausible mechanism of oxidative desulphurization reaction was also proposed.
介孔硅铝磷酸 SAPO-11 材料是采用绿色、低成本的蔗糖作为模板合成的。采用 SEM、TEM、N 物理吸附和 FT-IR 对 SAPO-11 进行了表征。蔗糖掺入 SAPO-11 晶体的晶体结构中，形成了二次介孔。同时，合成了具有不同 MoO 结晶相的介孔 Mo/SAPO-11 样品。此外，预先制备的最佳催化剂（钼质量含量为 3.6%）在氧化脱硫（ODS）中表现出了显著的高收率和耐久性。有趣的是，由于二次介孔和氧化钼的协同作用，α-MoO 复合材料的收率是纯介孔 SAPO-11 样品的两倍多。然后，通过 GC-MS 和 H NMR 确定 ODS 反应产物。评估了在反应条件下液体中活性物质的浸出情况。此外，还研究了动力学性质以计算反应的活化能，然后提出了一种可能的氧化脱硫反应机制。
