Synthesis of mesoporous Pt@SAPO-11 via in situ encapsulation for the decarboxylation of oleic acid to prepare C8–C17 alkanes,New Journal of Chemistry

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Synthesis of mesoporous Pt@SAPO-11 via in situ encapsulation for the decarboxylation of oleic acid to prepare C8–C17 alkanes
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2021-09-09 , DOI: 10.1039/d1nj02929k
Xiaolong Liu ₁ , Jingye Ma ₁ , Hong Yuan _{1,

2,

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Affiliation

A series of mesoporous Pt@SAPO-11 catalysts with different Pt loadings were prepared using an in situ encapsulation process. These materials exhibited good topological structures and high Brunauer–Emmett–Teller (BET) surface areas (132–166 m² g⁻¹). Transmission electron microscopy images showed that the Pt nanoparticles in this material were in the 5–8 nm size range and were highly dispersed on the inner surfaces of the SAPO-11 support. N₂-BET analyses demonstrated that the samples had mesoporous structures with average pore sizes of 7.3–8.5 nm. Characterization of the 1.0 wt% Pt@SAPO-11 catalyst by X-ray photoelectron spectroscopy and H₂-temperature programmed reduction indicated strong interactions between the Pt nanoparticles and the carrier. This material was used to promote oleic acid decarboxylation under CO₂ and gave a C8–C17 alkane yield of 80.8% after 4 h at 340 °C. After five repeated uses, the catalyst still gave a yield of 77.6%.

中文翻译：

通过原位包封合成介孔 Pt@SAPO-11 用于油酸脱羧制备 C8-C17 烷烃

使用原位封装工艺制备了一系列具有不同 Pt 负载量的介孔 Pt@SAPO-11 催化剂。这些材料表现出良好的拓扑结构和高布鲁诺-埃米特-特勒 (BET) 表面积（132-166 m ² g ^-1）。透射电子显微镜图像显示，该材料中的 Pt 纳米粒子尺寸范围为 5-8 nm，并且高度分散在 SAPO-11 载体的内表面。N ₂ -BET 分析表明，样品具有平均孔径为 7.3-8.5 nm 的介孔结构。通过 X 射线光电子能谱和 H ₂表征 1.0 wt% Pt@SAPO-11 催化剂-程序升温还原表明 Pt 纳米粒子和载体之间的相互作用很强。该材料用于在 CO ₂下促进油酸脱羧，并在 340 °C 下 4 小时后得到 80.8% 的 C8-C17 烷烃收率。重复使用五次后，催化剂的产率仍为77.6%。

更新日期：2021-09-15

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