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以乙苯、丙烷为原料,制取环氧丙烷并联产苯乙烯的工艺过程的第一步,是乙苯与空气自动氧化制备乙苯过氧化氢,其副反应生成物为苯乙酮和α-苯乙醇。乙苯过氧化混合物中各组分的含量是:乙苯过氧化氢25％以下,苯乙酮20％以下,α-苯乙醇5％以下,其他杂质不超过1％。我们采用了色谱法对乙苯过氧化制备乙苯过氧化氢时的产品进行分析。由于乙苯过氧化氢在色谱分析的柱温和氢气流条件下,将分解成为苯乙酮和α-苯乙醇,这使样品中原来存在的苯乙酮和α-苯乙醇的准确定量受到直接的影响。为了解决这个问题,我们在色谱分析前对样品进行预
Starting from ethylbenzene and propane, the first step in the process of preparing propylene oxide in parallel with styrene is that ethylbenzene and air are used to oxidize ethylbenzene hydroperoxide. The side reaction products are acetophenone and α-Phenethyl alcohol. The content of each component in the ethylbenzene peroxide mixture is 25% or less of ethylbenzene hydroperoxide, 20% or less of acetophenone, 5% or less of α-phenylethanol and less than 1% of other impurities. We used a chromatographic method to analyze ethylbenzene hydroperoxide produced by ethylbenzene oxidation. Since ethylbenzene hydroperoxide decomposes to acetophenone and alpha-phenylethanol under chromatographic column temperature and hydrogen flow conditions, accurate quantification of the original acetophenone and alpha-phenylethanol present in the sample is directly influences. To solve this problem, we pre-sample the sample before chromatographic analysis