副产物

By analyzing the differences between acidic and basic catalytic action in this transesterificatios, it is considered that the main cause of yielding an anisole by-product is due to the basic catalysis, a Lewis acidic catalyst is helpful for the selective DPC formation.

通过分析酸碱催化作用在酯交换反应中的差异，认为碱催化是副产物苯甲醚生成的主要原因，Lewis酸性的催化剂有利于碳酸二苯酯的高选择性。

The experimental result shows that this kind of experimental method is simpler, the products are easier to purify and there is no appendage to produce.

实验结果表明：这种合成方法比较简单，产品易提纯，基本上没有副产物而且可以得到较高的产率，是一种简单易行的制备咪唑类离子液体的方法。

The upside in the coping of reative cell and flank sets aspersion shower nozzle, time, aspersion of surface of grey grain of mensurable Xiang Shi, make the surface of limestone covers film of a thin water, when flue gas has spread every reative cell, the SO2 in flue gas and the limestone grain that covering water film undertake osculatory, in entering water film through diffusing, with limestone happening chemistry reacts, 80% above are the by-product that reaction produces gesso crystal.

反应室的顶部和侧面中上部设有洒水喷头，定时，定量向石灰颗粒表面洒水，使石灰石的表面覆盖一层薄水膜，当烟气流过每个反应室时，烟气中的SO2和覆盖着水膜的石灰石颗粒进行接触，通过扩散进入水膜中和石灰石发生化学反应，反应产生的副产物80%以上为石膏晶体。

At the same time the byproduct can be utilized availably to avoid polluting the environment.

同时使反应副产物得到有效利用，避免造成环境污染。

Many by-products were detected in the reaction mixture and considered to be formed deriving from water, solvents and the reactants themselves.

检测中发现了很多副产物，主要来自是体系内的水分、溶剂和反应物本身。

The results showed that the main product was benzaldehyde and a little by-products were styrene oxide and phenylacetaldehyde.

发现该工艺中主要生成苯甲醛，少量副产物是环氧苯乙烷和苯乙醛等。

Molar ratio of hydrogen to benzaldehyde was increased in consecutive hydrogenation process, which is beneficial to enhancing the selectivity of benzyl alcohol.

在苯甲酸甲酯加氢连续步骤中的氢醛比得到提高，有效地抑制了副产物甲苯的生成。

The yield of 4-methoxybenzophenone can reach 92%,and the main by-products are 2-methoxybenzophenone and phenol benzoate.

反应的主要副产物为2-甲氧基二苯甲酮和苯甲酸苯酯。

On the basis of above results, the reaction rectification tower to synthesize benzyl chloride was established.

目前，国内均采用间歇釜式生产，一氯乙酸生成的同时也生成了副产物二氯乙酸，反应终点二氯乙酸浓度在12-25％。

In the batch process of chlorination, the byproduct -benzyl bichloride comes out when the benzyl chloride content reaches 20%, which causes low single-pass chlorination depth, high consumption of raw materials, much operation cost, and serious contamination to the environment.

釜式反应生产过程中，氯化苄浓度达到20％时即有副产物二氯化苄产生，使单程氯化深度较低，原料单耗和操作费用高，环境污染较重。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。