Continuous Flow Photo-oxidations Using Supported Photocatalysts on Silica,Organic Process Research & Development

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Continuous Flow Photo-oxidations Using Supported Photocatalysts on Silica
Organic Process Research & Development ( IF 3.1 ) Pub Date : 2020-01-16 , DOI: 10.1021/acs.oprd.9b00420
Vincent Blanchard ₁ , Zakariae Asbai ₂ , Kevin Cottet ₁ , Guillaume Boissonnat ₁ , Marc Port ₂ , Zacharias Amara ₂

Affiliation

The immobilization of soluble photocatalysts, or photosensitizers, has the potential to reduce the environmental footprint as well as the costs associated with visible-light photochemical processes. We report here on the straightforward preparation of photocatalysts non-covalently supported on silica using electrostatic interactions and compare the activities of these new photocatalytic systems in the photo-oxidation of 1,5-dihydroxynaphthalene to juglone in batch and in a fixed-bed flow reactor. This study demonstrates that simple immobilization strategies can produce stable heterogeneous photocatalysts and provide promising processing options with an up to 24-fold improvement in productivity in flow relative to batch.

中文翻译：

使用硅胶上负载的光催化剂进行连续流光氧化

可溶性光催化剂或光敏剂的固定化具有减少环境足迹以及与可见光光化学过程相关的成本的潜力。我们在这里报告了使用静电作用直接在二氧化硅上非共价负载的光催化剂的制备方法，并比较了这些新的光催化系统在分批和在固定床流式反应器中将1,5-二羟基萘光催化氧化为朱酮的活性。。这项研究表明，简单的固定化策略可以产生稳定的多相光催化剂，并提供有前途的加工选择，与批次相比，流产率提高了多达24倍。

更新日期：2020-01-16

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