Maleic anhydride (MAnh) and its acids are critical intermediates in chemical industry. The synthesis of maleic anhydride from renewable furfural is one of the most sought after processes in the field of sustainable chemistry. In this study, a plate vanadium phosphorus oxide (VPO) catalyst synthesized by a hydrothermal method with glucose as a green reducing agent catalyzes furfural oxidation to MAnh in the gas phase. The plate catalyst—denoted as VPO_HT—has a preferentially exposed (200) crystal plane and exhibited dramatically enhanced activity, selectivity and stability as compared to conventional VPO catalysts and other state‐of‐the‐art catalytic systems. At 360 °C reaction temperature with air as an oxidant, about 90 % yield of MAnh was obtained at 10 vol % of furfural in the feed, a furfural concentration value that is much higher than those (<2 vol %) reported for other catalytic systems. The catalyst showed good long‐term stability and there was no decrease in activity or selectivity for MAnh during the time‐on‐stream of 25 h. The high efficiency and catalyst stability indicate the great potential of this system for the synthesis of maleic anhydride from renewable furfural.

中文翻译：

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板状钒磷氧化物催化剂上高效可再生糠醛的气相氧化为顺丁烯二酸酐

马来酸酐（MAnh）及其酸是化学工业中的关键中间体。由可再生糠醛合成马来酸酐是可持续化学领域中最受欢迎的方法之一。在这项研究中，以葡萄糖为绿色还原剂通过水热法合成的板状钒磷氧化物（VPO）催化剂在气相中催化糠醛氧化为MAnh。板式催化剂-称为VPO _HT-具有优先暴露的（200）晶面，并且与传统的VPO催化剂和其他最新的催化体系相比，具有显着增强的活性，选择性和稳定性。在360°C反应温度下，以空气为氧化剂，进料中糠醛含量为10％（体积）时，MAnh的收率约为90％，糠醛浓度值远高于其他催化方法报道的糠醛浓度值（<2％（体积））系统。该催化剂显示出良好的长期稳定性，并且在25小时的运行时间内MAnh的活性或选择性均未降低。高效和催化剂稳定性表明该系统具有从可再生糠醛合成马来酸酐的巨大潜力。