Cellulose ( IF 4.9 ) Pub Date : 2021-08-07 , DOI: 10.1007/s10570-021-04118-9 Esteban Gioria 1 , Chiara Signorini 1 , Laura Gutierrez 1 , María C. Taleb 2 , Arne Thomas 3 , Magdolna R. Mihályi 4
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Abstract
Palladium was incorporated into carboxymethylated cellulose fibers as a support, thereby becoming an efficient and stable catalyst for low temperature gas phase reaction. Thus, NO was used as test molecule of Greenhouse Gas to be catalytically reduced with hydrogen on an eco-friendly sustainable material containing palladium as the active site. Prior to the catalytic test, the catalysts were reduced with glucose as an eco-friendly reagent. The material characterization was performed by SEM–EDS, XRD, LRS, TGA and FTIR. The catalytic results showed that at 170 °C, NO conversion was 100% with a selectivity of 70% to nitrogen. While NOX species were completely converted into N2 at temperatures higher than 180 °C. The starting commercial dissolving pulp was also studied, but its performance resulted lower than the ones of functionalized fibers. The use of this strategy, i.e., the functionalization of cellulose fibers followed by in-situ formation of metallic nanoparticles, can be further applied for the design of a wide range of materials with interesting applications for gas and liquid phase reactions under mild conditions.
Graphic abstract
中文翻译：
改性纤维素上的钯纳米粒子作为低温气体反应的新型催化剂
摘要
钯作为载体掺入羧甲基化纤维素纤维中，成为低温气相反应的高效稳定催化剂。因此，NO被用作温室气体的测试分子，在以钯为活性位点的环保可持续材料上用氢催化还原。在催化测试之前，催化剂用作为环保试剂的葡萄糖还原。材料表征通过 SEM-EDS、XRD、LRS、TGA 和 FTIR 进行。催化结果表明，在 170 °C 时，NO 转化率为 100%，对氮气的选择性为 70%。而 NO X物种完全转化为 N 2在高于 180 °C 的温度下。还研究了起始商业溶解浆，但其性能低于功能化纤维的性能。这种策略的使用，即纤维素纤维的功能化，然后原位形成金属纳米粒子，可以进一步应用于设计广泛的材料，在温和条件下进行气相和液相反应的有趣应用。
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