Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China.
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China.
Bioresour Technol. 2015 Jun;185:62-9. doi: 10.1016/j.biortech.2015.02.076. Epub 2015 Feb 26.
The influences of four types of dilute acid washing (H2SO4, HCl, HF, HNO3) on moso bamboo pyrolysis were investigated via pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The effects of acid washings on the inorganics contents and the chemical structure were also analyzed. The results indicated that all the acid washings could effectively remove a large portion of inorganics and disrupt the chemical structure to a certain extent. HCl-washing behaved the best in removing inorganics and had the most marked disruption effect on bamboo structure. Acid washings promoted the bamboo pyrolysis and increased the contents of both phenols and sugars. HCl-washing had the most significant promotion effect on the levoglucosan formation with the absolute peak area increasing from 8.12×10(8) to 1.92×10(9). The absolute peak areas of 2,3-dihydrobenzofuran decreased more or less after acid washings. All the acid washings except H2SO4-washing could significantly increase the absolute peak area of methoxyeugenol.
采用热解-气相色谱/质谱联用仪（Py-GC/MS）研究了四种稀酸洗涤（H2SO4、HCl、HF、HNO3）对毛竹热解的影响。还分析了酸洗对无机物含量和化学结构的影响。结果表明，所有酸洗都能有效地去除大部分无机物，并在一定程度上破坏化学结构。HCl 洗涤在去除无机物方面表现最好，对竹材结构的破坏作用最显著。酸洗促进了竹材热解，增加了酚类和糖的含量。HCl 洗涤对左旋葡聚糖的形成有最显著的促进作用，其绝对峰面积从 8.12×10（8）增加到 1.92×10（9）。经酸洗后，2,3-二氢苯并呋喃的绝对峰面积或多或少减少。除 H2SO4 洗涤外，所有酸洗均能显著增加甲氧基丁香酚的绝对峰面积。
