Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, USA.
Department of Chemistry, Prairie View A&M University, Prairie View, TX 77446, USA.
Bioresour Technol. 2015;189:405-408. doi: 10.1016/j.biortech.2015.04.030. Epub 2015 Apr 15.
The effects of adding Cr(3+), Mn(2+), Fe(3+), Co(2+) Ni(2+), Cu(2+), Zn(2+) and La(3+) chlorides as co-catalysts to 1-(1-propylsulfonic)-3-methylimidazolium chloride acidic ionic liquid catalyzed saccharification of corn stover in aqueous medium was studied at 140-170 °C, by measuring the total reducing sugar (TRS) and glucose yields. The samples with Mn(2+), Fe(3+), Co(2+) as co-catalysts produced higher TRS yields compared to the sample without the metal ions. The Mn(2+) produced the highest catalytic effect enhancements and produced TRS yields of 68.0%, 72.9%, 90.2% and 87.9% at 140, 150, 160 and 170 °C respectively; whereas the corn stover samples without the Mn(2+) produced TRS yields of 42.9%, 52.3%, 54.4% and 53.5% at the same four temperatures. At higher temperatures of 160 and 170 °C, all metal ions studied produced significant enhancements in glucose yields, except Cr(3+). The addition of La(3+) as a co-catalyst produced the highest glucose yield improvement.
研究了在 140-170°C 下，Cr(3+)、Mn(2+)、Fe(3+)、Co(2+)、Ni(2+)、Cu(2+)、Zn(2+)和 La(3+)氯化物作为共催化剂对 1-(1-丙基磺酸基)-3-甲基咪唑氯酸性离子液体催化玉米秸秆在水介质中糖化的影响，通过测量总还原糖（TRS）和葡萄糖产率。与不含金属离子的样品相比，Mn(2+)、Fe(3+)、Co(2+)作为共催化剂的样品产生了更高的 TRS 产率。Mn(2+)产生了最高的催化效果增强，在 140、150、160 和 170°C 下分别产生 68.0%、72.9%、90.2%和 87.9%的 TRS 产率；而没有 Mn(2+)的玉米秸秆样品在相同的四个温度下产生 42.9%、52.3%、54.4%和 53.5%的 TRS 产率。在 160 和 170°C 较高的温度下，除 Cr(3+)外，研究的所有金属离子都显著提高了葡萄糖产率。添加 La(3+)作为共催化剂可显著提高葡萄糖的产率。
