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期刊论文 3

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2017 1

2012 1

2011 1

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己内酰胺 1

生产技术 1

绿色化学 1

绿色化工 1

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尼龙-6 单体己内酰胺绿色生产技术 Review

宗保宁, 孙斌, 程时标, 慕旭宏, 杨克勇, 赵俊琦, 张晓昕, 吴巍

《工程（英文）》 2017年第3卷第3期页码 379-384 doi: 10.1016/J.ENG.2017.03.003

摘要：

中国石化石油化工科学研究院(RIPP) 历经20 年的努力，成功开发出尼龙-6 单体己内酰胺绿色生产技术。该项技术主要包括：钛硅分子筛与浆态床反应器集成用于环己酮氨肟化合成环己酮肟，纯硅分子筛与移动床反应器集成用于环己酮肟气相贝克曼重排，非晶态Ni 催化剂与磁稳定床反应器集成用于己内酰胺精制。己内酰胺绿色生产技术在国际上率先实现工业化应用，建成了200 kt·a⁻¹的工业装置。与已有技术相比，工业装置投资明显减少，氮原子利用率大幅提升，“三废”排放显著下降，没有副产硫酸铵。因此，已内酰胺与苯之间的价格差逐步减小。2015 年，己内酰胺绿色生产技术的产能达到3 × 10⁶ kt·a⁻¹，使我国成为世界第一己内酰胺生产大国，全球市场份额超过50 %。

关键词：绿色化学绿色化工己内酰胺生产技术

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Influence of Na

Rumin YANG, Fanhui MENG, Xiao WANG, Yaquan WANG

《化学科学与工程前沿（英文）》 2011年第5卷第4期页码 401-408 doi: 10.1007/s11705-011-1129-5

摘要： Silicalite-1 was hydrothermally synthesized in the presence of different concentrations of Na using tetrapropylammonium hydroxide (TPAOH) as a template. The synthesis was followed by a base treatment. The silicalite-1samples were characterized using X-ray diffraction, scanning electron microscopy, N adsorption, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and NH temperature-programmed desorption. The samples were used as catalysts for the vapor phase Beckmann rearrangement of cyclohexanone oxime. During the synthesis, the sodium ions were incorporated onto the silicalite-1 crystals, but were then removed by the base treatment. All the catalysts exhibited nearly complete conversion of cyclohexanone oxime to ?-caprolactam with selectivities grater than 95%. Addition of less than 2.5 mol-% Na (relative to TPAOH) did not influence the catalytic properties. However, for Na concentrations≥5 mol-%, the particle sizes of silicalite-1 increased and the catalytic activities decreased, which can be attributed to carbon deposition. The results in this work are of great importance for the polymer industry.

关键词： silicalite-1 cyclohexanone oxime vapor phase Beckmann rearrangement ?-caprolactam

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One-step synthesis of

Kuiyi YOU, Fangfang ZHAO, Xueyan LONG, Pingle LIU, Qiuhong AI, Hean LUO

《化学科学与工程前沿（英文）》 2012年第6卷第4期页码 389-394 doi: 10.1007/s11705-012-1218-0

摘要： A simple and efficient approach for the synthesis of -caprolactam via the liquid phase nitrosation of cyclohexane and nitrosyl sulfuric acid in the presence of concentrated sulfuric acid has been developed. A series of novel AlVPO composites were prepared by an impregnation method and the composites were then employed to catalyze the nitrosation reaction of cyclohexane and nitrosyl sulfuric acid. Compared to the reaction using fuming sulfuric acid, the selectivity for the desired product was significantly improved using this one-step catalytic process. This method affords a shortcut to prepare -caprolactam and its analogs from cyclohexane.

关键词： cyclohexane ?-caprolactam AlVPO composite catalysts one-step synthesis concentrated sulfuric acid