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The influence of reaction temperature on CHE reaction over cobalt resinate at 7 h was investigated and shown in Fig. 1. It is seen that the conversion of CHE increased almost linearly with reaction temperature up to 333 K. The selectivity of 2-CHON also increased with increase in reaction temperature up to 333 K. A further increase in the reaction temperature resulted in the decrease in the con-version rate of CHE and the selectivity of 2-CHON, probably owing to the polymerization of CHE or 2-CHON at higher temperature. Whereas the selectivity of 2-CHOL decreased with the increase of reaction temperature up to 333 K, which is attributed to the further reaction of 2-CHOL to 2-CHON. Beyond 333 K, the selectivity of 2-CHOL increased with increase in reaction temperature. Considering the effect of temperature on both conversion of CHE and the selectivity of 2-CHON, 333 K was chosen as the suitable temperature for the oxidation of CHE.
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我們調(diào)查了反應(yīng)溫度在樹(shù)脂酸鈷存在下反應(yīng)7 h對(duì)CHE反應(yīng)的影響，如圖1所示�？梢钥吹诫S著反應(yīng)溫度的增加（直至333k）CHE的轉(zhuǎn)化率幾乎是呈直線增加的。2-CHON的選擇性也是隨著溫度增加（直至333k）而增加的。進(jìn)一步提高反應(yīng)溫度導(dǎo)致CHE的轉(zhuǎn)化率和2-CHON的選擇性降低，可能由于在更高的溫度CHE或2-CHON的聚合作用。而2-CHOL的選擇性隨反應(yīng)溫度（到333 K）的增加而下降,這是由2-CHOL進(jìn)一步反應(yīng)為2-CHON導(dǎo)致。超過(guò)333k， 2-CHOL的選擇性隨著反應(yīng)溫度的增加而增加�？紤]溫度的影響對(duì)CHE的轉(zhuǎn)化和2-CHON的選擇性,選擇333 K為CHE的氧化的適用溫度，