SO3H-functionalized porous organic polymer with amphiphilic and swelling properties: A highly efficient solid acid catalyst for organic transformations in water

Lei, Yizhu; Zhang, Maomin; Leng, Guojun; Ding, Chao; Ni, Youming

doi:10.1016/j.micromeso.2020.110110

Cited by 20 publications

(10 citation statements)

References 53 publications

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“…The remaining SHCPs all achieved ≥60% conversion of cyclohexyl acetate, outperforming both the commercial resin Amberlyst-15 and homogeneous (liquid) H2SO4. 26 Interestingly, high acid densities did not appear crucial for catalyst performance.…”

Section: Samplementioning

confidence: 98%

A One-Pot Route to Fine-Tuned Hypercrosslinked Polymer Solid Acid Catalysts

Blocher

Mayer

Schweng

et al. 2022

Preprint

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Highly acidic sulfonated polymers are promising heterogeneous catalysts due to their excellent chemical and thermal stability, as well as the possibility of employing low-cost synthesis routes. However, their production is time consuming and control of their chemical and physical properties is often difficult. Here, we produce sulfonated hypercrosslinked polymers using chlorosulfonic acid as a dual polymerisation catalyst and sulfonation agent, consolidating a conventional two-step process into a one-pot reaction. The synthesis time of the networks is reduced from 5-6 days to <24 hours, while significantly lowering or eliminating the requirement of some reagents. Furthermore, these sulfonated networks display superior acid site densities and porous properties to conventional equivalents. By varying the ratio of aromatic monomer with the multifunctional chlorosulfonic acid at the synthetic stage, excellent control over the polymers’ porous properties and sulfonation density is achieved, permitting judicious catalyst design. The ability of these polymers to act as heterogeneous acid catalysts is demonstrated via the hydrolysis of cyclohexyl acetate. Therein, it is shown that fine-tuning polymers has a dramatic effect on their catalytic performance and allows for the identification of key catalyst properties for optimal conversion.

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Section: Samplementioning

confidence: 98%

A One-Pot Route to Fine-Tuned Hypercrosslinked Polymer Solid Acid Catalysts

Blocher

Mayer

Schweng

et al. 2022

Preprint

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“…25 Elsewhere, a SHCP containing a phosphonium salt in its structure was used for the two-phase hydrolysis of cyclohexyl acetate to cyclohexanol, achieving conversions and selectivity of up to 93 and 95%, respectively. 26 SHCPs have also shown promise as selective adsorbents, including for propene/propane separation, 27,28 heavy metal adsorption, 29 and water pollutants. 30 In conventional approaches, sulfonic acid groups are introduced via the post-synthetic treatment of HCPs using sulfonating agents, commonly chlorosulfonic acid.…”

Section: Introductionmentioning

confidence: 99%

One-pot route to fine-tuned hypercrosslinked polymer solid acid catalysts

et al. 2022

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“…[18] In general, the hierarchically ordered porous catalysts are more efficient than single pore catalysts via efficient mass transfer performance and the accessibility of catalytic sites. [19] A common method for preparing porous polymers is to post-crosslink the polymer by Friedel-Crafts alkylation reaction. [20] This pore-forming method occupies a large number of sulfonic acid sites functionalized active sites, which limits the density of solid acid sites.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically Ordered Porous Solid Acid: Preparation and Application as a Biodiesel Catalyst

et al. 2022

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Acid‐catalyzed esterification of high fatty acid content feedstocks with methanol is an efficient way to prepare biodiesel. In this work, using the dual template method combining the colloidal crystal template and the porogen, a series of hierarchical ordered porous weak cross‐linked polystyrene solid acid catalysts with high mass transfer efficiency and high acid density were successfully prepared. This catalyst displayed stronger acid strength and better swelling properties. The specific surface area of the obtained catalyst is 32 m2 ⋅ g−1, and its acid value reaches 4.11 mmol ⋅ g−1. The effect of the hierarchical porous structure and swelling on the access to the catalytic sites were illuminated. Acid‐catalyzed reactions showed that hierarchically ordered porous cross‐linked polystyrene solid acid catalyst was more active (the efficiency of the esterification of oleic acid and methanol was up to 93.67 %) than Amberlyst‐15 catalyst.

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SO3H-functionalized porous organic polymer with amphiphilic and swelling properties: A highly efficient solid acid catalyst for organic transformations in water

Cited by 20 publications

References 53 publications

A One-Pot Route to Fine-Tuned Hypercrosslinked Polymer Solid Acid Catalysts

A One-Pot Route to Fine-Tuned Hypercrosslinked Polymer Solid Acid Catalysts

One-pot route to fine-tuned hypercrosslinked polymer solid acid catalysts

Hierarchically Ordered Porous Solid Acid: Preparation and Application as a Biodiesel Catalyst

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