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Modified cellulose with tunable surface hydrophilicity/hydrophobicity as a novel catalyst support for selective reduction of nitrobenzene
Catalysis Communications ( IF 3.4 ) Pub Date : 2020-01-30 , DOI: 10.1016/j.catcom.2020.105949
Dan-dan Li , Guo-ping Lu , Chun Cai

Cellulose with tailorable hydrophilicity/hydrophobicity were synthesized by grafting F-containing groups and utilized as supports for palladium nanoparticles. The obtained catalysts were applied in the synthesis of N-phenylhydroxylamine from controllable reduction of nitrobenzene. Unexpectedly high conversion and selectivity could be achieved with 25 ppm Pd catalyst at room temperature in water. The precise modification of the catalyst surface is crucial to realize this targeted transformation. Further investigation indicated that modified cellulose with a more hydrophobic surface would favour the adsorption of nitrobenzene over N-phenylhydroxylamine thus prevent full hydrogenation to aniline.



中文翻译:

具有可调的表面亲水性/疏水性的改性纤维素,作为选择性还原硝基苯的新型催化剂载体

通过接枝含F的基团合成具有可调节的亲水性/疏水性的纤维素,并将其用作钯纳米粒子的载体。将得到的催化剂用于硝基苯的可控制还原合成N-苯基羟胺。在室温下于水中使用25 ppm Pd催化剂,可以实现意想不到的高转化率和选择性。催化剂表面的精确修饰对于实现这种目标转化至关重要。进一步的研究表明,具有更疏水表面的改性纤维素比N-苯基羟胺更易于吸附硝基苯,从而阻止了其完全氢化为苯胺。

更新日期:2020-01-31
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