7-丁氧基苯并吡喃吡唑-3-酮的制备及表征——推荐一个综合创新型化学实验

介绍稠杂环小分子液晶的制备、表征及性能测试的综合研究性实验。整个实验过程涉及有机合成基本操作及材料的定量分析（气相色谱）、结构表征（红外光谱、核磁共振光谱）、热性能表征（差示扫描量热）、液晶织构表征（偏光显微观察）等内容,是一个涵盖内容全面、适合学生综合实验的实例。     

铋掺杂介孔二氧化钛的制备及光催化动力学

以介孔分子筛(KIT-6)为载体,采用溶液浸渍法合成了铋(Bi)掺杂的介孔二氧化钛(TiO₂)光催化剂。利用XRD、TEM、SEM、XPS、N₂吸附-脱附法和拉曼光谱法等技术手段对材料的结构和形貌进行表征。通过紫外-可见吸收光谱法考察了催化剂对罗丹明B光催化降解效率,进一步考察了Bi的掺杂量对光催化反应速率的影响,并对光催化降解动力学进行了初步研究。结果表明,Bi掺杂的介孔TiO₂具有较窄的孔径分布(3~4 nm),而且吸收范围扩展到可见光区,其光催化活性明显高于商品TiO₂(P25)。随之Bi掺杂量的提高,反应速率常数也增大,其光催化降解罗丹明B的反应均符合准一级动力学方程。     

Thermal Decomposition Behavior and Non-isothermal Decom-position Reaction of Copper(II) Salt of 4-Hydroxy-3,5-dinitro- pyridine Oxide and Its Application in Solid Rocket Propellant

Introduction Copper(II) salt of 4-hydroxy-3,5-dinitropyridine ox-ide (4HDNPOCu) is an energetic material containing energetic groups of NO2, which can be used as an ener-getic auxiliary catalyst substituting the inertia copper salt to improve the catalysis of the main catalyst (lead salt) in Composite Modified Double Base propellant containing RDX (RDX-CMDB propellant).1 Thermal behavior is one of the most important aspects affecting its catalytic efficiency for propellant. However, …     

Zn(Met)Ac_2·H_2O固态配合物的制备及标准生成焓

在水 丙酮混合溶剂中合成了Zn(Met)Ac2 ·H2 O固态配合物 ,通过化学分析、元素分析、IR、DSC和TG DTG对其组成、结构及热稳定性进行了表征。得出其脱水过程和分解过程的焓变分别为 15 30J/ g和35 7 80J/ g。用转动弹热量计测得其恒容燃烧能ΔcE为 (- 6 4 72 11± 2 2 0 )kJ/mol,计算得其标准燃烧焓ΔcH0m 和标准生成焓ΔfH0m 分别为 (- 6 4 75 2 1± 2 2 0 )kJ/mol和 (- 4 2 9 0 4± 2 5 9)kJ/mol。     

Kinetics and Mechanism of the Thermal Decomposition Reaction of 3,3-Bis（azidomethyl）oxetane／Tetrahydrofuran Copolymer

Introduction 3,3-Bis(azidomethyl)oxetane/tetrahydrofuran (BAM- O/THF, marked as B/T) copolymer can be used as an azide binder of high energy propellants with the lower signature, and lower sensitivity to improve the me-chanical properties at lower temperature and the burning rate characteristics. Its decomposition kinetics and the effects of THF on the decomposition kinetics of BAMO copolymers have been reported.1,2 In the present work, we report the kinetic model function and kinetic pa…     

侧向多氟取代二芳基乙炔类液晶的合成及性能

以对烷基溴苯和4-溴-2,3-二氟苯酚为原料,经芳基硼酸化、Suzuki偶联反应、Sonogashira偶联反应和碘代等反应,制得16种侧向多氟取代二芳基乙炔类液晶化合物,其结构经IR、NMR和MS确认。利用差示扫描量热仪(DSC)、偏光显微镜(POM)和阿贝折光仪对该系列化合物进行了性能研究。结果表明,该系列化合物具有较低的熔点、宽的液晶相区以及较高的光学各向异性值(Δn>0.3)。该类液晶具有在双频液晶中应用的广阔前景。     

新型交联磺化聚醚偶酰酮的合成及其物理性能

以对氟苯甲醛为原料,依次经过安息香缩合、亲核取代和脱甲氧基化反应制得二酚类单体——4,4’-二[(4-羟基)苯氧基]-二苯偶酰(3);3与4,4’-联苯二酚和3,3’-二磺酸钠基-4,4’-二氟二苯甲酮进行亲核缩聚反应,合成了一系列链状磺化聚醚偶酰酮聚合物(6a～6d)并制得质子膜(F-6a～F-6d);以3,3’-二氨基联苯胺为交联剂,6a～6d经缩环反应合成了新型交联结构的磺化聚醚偶酰酮(8a～8d)并制得具有不同离子交换容量的质子膜(F-8a～F-8d),6a～6d与8a～8d的结构经1H NMR和IR表征。物理性能研究结果表明,F-8a～F-8d具有较高的热稳定性和质子传导率。     

纳米氧化钕的制备及其催化性能的研究

Nanometer-sized neodymium oxide has been synthesized by humid solid state reaction at room temperature， and characterized by scanning electron microscope， laser light scattering and X-ray diffraction. The effects of nanometer -sized neodymium oxide on catalyzing thermal decomposition reaction of hexogen (cyclotrimethylenetriamine， RDX) and absorbent powder (nitrocellulose absorbed nitroglycerin， NC/NG) have been investigated by DSC method. The mechanism of these catalytic reactions has also been proposed. The experimental results show that nanometer-sized neodymium oxide can catalyze the decomposition reaction of RDX and NC/NG effectively. The experimental results further suggest that nanometer-sized neodymium oxide is a potentially useful combustion catalyst of nitroamine propellant.     

对标新工科无机材料合成方法课程改革实践

为顺应新工科人才培养的需求，对无机材料合成方法课程进行了改革探索。结合本专业光电功能材料研究特色，整合教学内容；采用对分课堂教学模式和多途径实践教学，提升学生创新思维、综合能力和实践能力；多角度融入思政元素，增强学生的家国情怀；细化采分点，突出过程性评价。该改革实践对同类课程建设具有借鉴意义。