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化工学报  2014 

利用固体磷酸催化热解纤维素制备左旋葡萄糖酮

DOI: 10.3969/j.issn.0438-1157.2014.03.021, PP. 912-920

Keywords: 固体磷酸,热解,催化,生物质,左旋葡萄糖酮,Py-GC/MS

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Abstract:

以SBA-15为载体制备了固体磷酸,将其和纤维素机械混合后进行快速热解制备左旋葡萄糖酮(LGO)。通过Py-GC/MS(快速热解-气相色谱/质谱联用)实验,考察了催化热解温度、催化剂/纤维素比例对纤维素热解生成LGO以及其他产物的影响。实验结果表明,固体磷酸能够抑制纤维素热解形成左旋葡萄糖(LG)等产物,并大幅促进LGO的生成,从而高选择性地获得以LGO为主的热解产物。在热解温度为350℃以及催化剂/纤维素比例为1/1的条件下,可获得最高的LGO产率与相对含量,相对峰面积值高达68.6%。此外固体磷酸还能促进LG脱水形成LGO。

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