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对苯二甲酸法合成对苯二甲酰胺的工艺研究 被引量:1
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作者 单玉华 李为民 +1 位作者 魏科年 邬国英 《江苏石油化工学院学报》 2002年第4期1-3,共3页
研究了对苯二甲酸法合成对苯二甲酰胺的反应过程,考察了溶剂、温度、时间等反应条件对目的产物收率的影响。结果表明合成对苯二甲酰胺的优化条件为:用适当量的乙二醇溶解对苯二甲酸二甲酯,60℃常压通氨气反应8h,对苯二甲酰胺收率可达94%。
关键词 对苯二甲酸法 合成 对苯二甲酰胺 工艺 研究 对苯二甲酸二甲酯 酰胺化
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Soft sensor of chemical processes with large numbers of input parameters using auto-associative hierarchical neural network 被引量:1
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作者 贺彦林 徐圆 +1 位作者 耿志强 朱群雄 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第1期138-145,共8页
To explore the problems of monitoring chemical processes with large numbers of input parameters, a method based on Auto-associative Hierarchical Neural Network(AHNN) is proposed. AHNN focuses on dealing with datasets ... To explore the problems of monitoring chemical processes with large numbers of input parameters, a method based on Auto-associative Hierarchical Neural Network(AHNN) is proposed. AHNN focuses on dealing with datasets in high-dimension. AHNNs consist of two parts: groups of subnets based on well trained Autoassociative Neural Networks(AANNs) and a main net. The subnets play an important role on the performance of AHNN. A simple but effective method of designing the subnets is developed in this paper. In this method,the subnets are designed according to the classification of the data attributes. For getting the classification, an effective method called Extension Data Attributes Classification(EDAC) is adopted. Soft sensor using AHNN based on EDAC(EDAC-AHNN) is introduced. As a case study, the production data of Purified Terephthalic Acid(PTA) solvent system are selected to examine the proposed model. The results of the EDAC-AHNN model are compared with the experimental data extracted from the literature, which shows the efficiency of the proposed model. 展开更多
关键词 Soft sensor Auto-associative hierarchical neural network Purified terephthalic acid solvent system MATTER-ELEMENT
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Study on the Synthesis and Properties of PET Using Hydrotalcite as Catalyst
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作者 Li Guihe Fu Zhifeng Cao Ding 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2013年第3期65-69,共5页
Poly(ethylene terephthalate)(PET)was synthesized by the in-situ polymerization method using layered double hydrotalcite(LDH)as the catalyst,and the thermal and flame retardation properties of PET were investigated as ... Poly(ethylene terephthalate)(PET)was synthesized by the in-situ polymerization method using layered double hydrotalcite(LDH)as the catalyst,and the thermal and flame retardation properties of PET were investigated as required.As identified by differential scanning calorimetry(DSC)and thermogravimetric(TGA)analysis,the crystallization rate and thermal degradation temperature of the as-prepared PET sample were enhanced compared with commercial PET sample.It was confirmed from the fire-resistant property study that the LDH can be used as an efficient flame-retardant besides functioning as a catalyst in the transesterification/polycondensation process for PET synthesis. 展开更多
关键词 poly(ethylene terephthalate) layered double hydrotalcite TRANSESTERIFICATION POLYCONDENSATION CATALYST
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