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A Catalyst of Pd@MIL‐101@SGO Catalyzes Epoxidation and Hydroxymethoxylation Tandem Reactions of Styrene
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-03-26 , DOI: 10.1002/slct.202000111 Hong Tang 1 , Mei‐Li Zhou 1 , Xin Li 1 , Yu‐Yang Zhang 1 , Zheng‐Bo Han 1
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-03-26 , DOI: 10.1002/slct.202000111 Hong Tang 1 , Mei‐Li Zhou 1 , Xin Li 1 , Yu‐Yang Zhang 1 , Zheng‐Bo Han 1
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Brönsted acid and metal nanoparticles are important catalytic functional groups. In this work, a bifunctional heterogeneous catalyst with both strong Brönsted acid and metal nanoparticles was prepared. First Brönsted acid groups were obtained by sulfonating graphene oxide, next metal organic frameworks MIL‐101 (Cr) grew on sulfonated graphene oxide (SGO), then palladium nanoparticles (NPs) were encapsulated in MIL‐101@SGO composites. The catalyst was characterized by a variety of different techniques including XRD, SEM, TEM, EDS, FT‐IR, TGA, and nitrogen physisorption measurements. Tandem heterogeneous catalysis of Pd@MIL‐101@SGO was investigated for the one‐pot direct conversion of styrene into β‐alkoxy alcohol. The catalyst retained high catalytic activity after 5 times of reuses in aqueous solutions. No loss of crystal structure was detected by PXRD and no leakage of Pd was detected by ICP‐AES. Therefore, Pd@MIL‐101@SGO proved to be an effective recyclable heterogeneous catalyst for synthesizing β‐alkoxy alcohol and exhibited potential application in industry.
中文翻译：
Pd @ MIL-101 @ SGO的催化剂催化苯乙烯的环氧化和羟甲氧基化串联反应
布朗斯台德酸和金属纳米颗粒是重要的催化官能团。在这项工作中，制备了具有强布朗斯台德酸和金属纳米粒子的双功能多相催化剂。首先通过磺化氧化石墨烯获得布朗斯台德酸基，然后在磺化氧化石墨烯（SGO）上生长出金属有机骨架MIL-101（Cr），然后将钯纳米颗粒（NP）封装在MIL-101 @ SGO复合材料中。通过多种不同的技术对催化剂进行表征，包括XRD，SEM，TEM，EDS，FT-IR，TGA和氮物理吸附测量。研究了Pd @ MIL-101 @ SGO的串联非均相催化一锅法直接将苯乙烯转化为β-烷氧基醇的方法。在水溶液中重复使用5次后，该催化剂保持了较高的催化活性。PXRD未检测到晶体结构损失，ICP-AES未检测到Pd泄漏。因此，Pd @ MIL-101 @ SGO被证明是一种有效的可循环利用的多相催化剂，可合成β-烷氧基醇，在工业上具有潜在的应用前景。
更新日期：2020-03-27
中文翻译：
Pd @ MIL-101 @ SGO的催化剂催化苯乙烯的环氧化和羟甲氧基化串联反应
布朗斯台德酸和金属纳米颗粒是重要的催化官能团。在这项工作中，制备了具有强布朗斯台德酸和金属纳米粒子的双功能多相催化剂。首先通过磺化氧化石墨烯获得布朗斯台德酸基，然后在磺化氧化石墨烯（SGO）上生长出金属有机骨架MIL-101（Cr），然后将钯纳米颗粒（NP）封装在MIL-101 @ SGO复合材料中。通过多种不同的技术对催化剂进行表征，包括XRD，SEM，TEM，EDS，FT-IR，TGA和氮物理吸附测量。研究了Pd @ MIL-101 @ SGO的串联非均相催化一锅法直接将苯乙烯转化为β-烷氧基醇的方法。在水溶液中重复使用5次后，该催化剂保持了较高的催化活性。PXRD未检测到晶体结构损失，ICP-AES未检测到Pd泄漏。因此，Pd @ MIL-101 @ SGO被证明是一种有效的可循环利用的多相催化剂，可合成β-烷氧基醇，在工业上具有潜在的应用前景。
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