用膜电解法处理低浓度SO2吸收液的三室电解槽材料的选择

提出了用膜电解法处理低浓度SO2吸收液的方法，介绍了三室电解槽的设计原理及在电场作用下，电解槽内离子的迁移和电解反应机理，系统地讨论了电解槽组成单元材料（如阳离子交换器）的选择及在H2SO4－NaHSO3-Na2SO3体系中金属阳极的选择等，并进行了试验验证，得到了很好的结果。     

Gas chromatographic thermodynamics on hydration processes of magnesium chloride with low water

1　INTRODUCTIONMagnesiumchlorideisabasicmaterialforchem icalindustry ,andithaswideapplicationsinmetallur gy,architecturalmaterialandtextileindustry .Itisalsoamaterialforfire resistantproducts ,cryogenandcompoundfertilizerproductions[1] .Thefullydehy dratedmagnesiumchlorideisagoodmaterialforelec trolyticmetalmagnesium production .Becausemag nesiumchloridehasastrongadsorptiveability ,itisalsousedasadryingagent .Manysuccessfulworkshavebeendoneonthedehydrationofbischophite[2 10 ] .Butinfact,…     

膜电解蚀刻废液制备硅藻土基纳米氢氧化铜可湿性粉剂

以含铜蚀刻废液经膜电解后的阳极液为原料,在水相溶液中制备硅藻土基纳米氢氧化铜可湿性粉剂,并探讨了NaOH加入量、硅藻土加入量以及稳定剂对纳米Cu（OH）₂制备的影响,并确定了最佳工艺条件（膜电解阳极液15 ml、2 mol·L^-1的NaOH溶液45 ml、粒径为44 mm的硅藻土1.6 g、5%的磷酸三丁酯溶液100 ml）,同时运用扫描电镜（SEM）、透射电镜（TEM）和X射线衍射仪（XRD）等检测手段对最优工艺条件下合成的粉剂进行了表征。在上述最优工艺条件下所制备的硅藻土基纳米Cu（OH）₂产品中OH^-与Cu²⁺的摩尔比为1.872,纯度为93.60%,悬浮率为66.03%,产品粒径为45 nm,满足商品纳米Cu（OH）₂可湿性粉剂的性能要求。实验结果表明该制备工艺操作方便、简单可行,是实现蚀刻废液再生利用的有效方法,具有一定的应用价值。     

膜电解蚀刻废液制备硅藻土基纳米氢氧化铜可湿性粉剂

以含铜蚀刻废液经膜电解后的阳极液为原料,在水相溶液中制备硅藻土基纳米氢氧化铜可湿性粉剂,并探讨了NaOH加入量、硅藻土加入量以及稳定剂对纳米Cu(OH)2制备的影响,并确定了最佳工艺条件(膜电解阳极液15 ml、2 mol·L-1的NaOH溶液45 ml、粒径为44-m的硅藻土1.6 g、5%的磷酸三丁酯溶液100 ml),同时运用扫描电镜(SEM)、透射电镜(TEM)和X射线衍射仪(XRD)等检测手段对最优工艺条件下合成的粉剂进行了表征。在上述最优工艺条件下所制备的硅藻土基纳米Cu(OH)2产品中OH-与Cu2+的摩尔比为1.872,纯度为93.60%,悬浮率为66.03%,产品粒径为45 nm,满足商品纳米Cu(OH)2可湿性粉剂的性能要求。实验结果表明该制备工艺操作方便、简单可行,是实现蚀刻废液再生利用的有效方法,具有一定的应用价值。     

吡唑啉酮类钐配合物的合成及其光谱分析

通过1-取代苯基-3-甲基-4-α-噻吩甲酰基-5-吡唑啉酮配体与稀土离子钐进行络合反应制备了二元及三元吡唑啉酮类钐配合物,并通过核磁共振、红外光谱和元素分析对其进行表征,证明二元配合物的化学式为Sm(L)3(C2H5OH)2,三元配合物的化学式为Sm(L)3(Phen)2(L=1-取代苯基-3-甲基-4-(α-噻吩甲酰基)-5-吡唑啉酮)。经过研究其紫外吸收光谱和荧光光谱表明配合物的吸收光谱主要来源于第一配体,配合物具有荧光。     

膜电解再生氨性含铜蚀刻废液及氯化亚铜制备技术研究

试验利用膜电解分离技术对氨性含铜蚀刻废液的再生开展了相关研究工作,考察了槽电压、阳极液pH值、电解时间等因素对膜电解电流效率的影响,并确定了最优电解条件:槽电压2.80 V、阳极液初始pH为9.07、电解时间3.0 h时,此时电流效率可达94.0%.电解后的阴极液用于制备氯化亚铜,试验得出最佳制备工艺条件:水解反应温度为20℃,按理论反应摩尔比为1:1.056的比例加入亚硫酸钠,再加入阴极液体积1.2倍的HCl(1:1)溶液调节溶液pH为3.5,稀释倍数为11的条件下,氯化亚铜产率达到64.32%,纯度为99.13%.试验结果表明该工艺操作方便、简单可行,是处理蚀刻废液、回收铜的有效方法,具有一定的应用价值.     

膜电解法处理低浓度SO_2烟气吸收液研究

为使膜电解技术应用于低浓度 SO2 净化工艺中 ,将 SO2 碱吸收液中 Na HSO3和 Na2 SO3在三室膜电解槽中进行了转化和分离。研究了电解过程中电压、电解液 p H值变化 ;酸室温度对电流效率、电解电压的影响 ;酸、碱室料比对电解效果的影响。提出了合理的工艺流程     

Synthesis and luminescent properties of novel pyrazolone rare earth complexes

A novel pyrazolone pyridine-containing ligand,2,6-bis(1-phenyl-4-ethoxycarbonyl-5-pyrazolone-3-yl)pyridine (H2L) was de-signed and synthesized from pyridine-2,6-dicarboxylic acid (1),and its Eu(III) and Tb(III) complexes were prepared.The ligand and com-plexes were characterized in detail based on FT-IR spectra,1H NMR,elemental analysis and thermal analysis,and the formula of Ln2L3·4H2O (Ln=Eu or Tb) of rare earth complexes was confirmed.The UV-vis absorption spectra and photoluminescence properties of the complexes were investigated,which showed that the Eu(III) and Tb(III) ions could be sensitized efficiently by the ligand (H2L) and emit the photolumi-nescence with high intensity,narrow half-peak width,and monochromic light.The results indicated that the complexes showed potential as excellent luminescent materials.     

Luminescence properties of the co-luminescence groups of Sm-La-pyridyl carboxylic acids

A novel ligand, N,N’-(2,6-pyridinedicarbonyl)bis[N-(carboxymethyl)] (L1) was designed and synthesized starting from pyri-dine-2,6-dicarboxylic acid (1). The ligand (L1) and intermediate product (3) were characterized by 1H nuclear magnetic resonance (NMR), Fourier transform infrared spectrometer (FT-IR) spectra and elemental analysis. Besides, four novel co-luminescence systems of Sm-La-pyridyl carboxylic acids: K4Sm(1-x)Lax(L1)Cl3·y1H2O, K12Sm2(1-x)La2x(L2)3 Cl6·y2H2O, K6Sm2(1-x)La2x(L3)Cl6·y3H2O and K4Sm(1-x)Lax(L4)Cl3·y4H2O (x was the mole fraction of La(III) in the mixed ions, the value was 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, respectively; y1, y2, y3, y4 were plus integer) were studied, and the mechanism of fluorescence enhancement effect was discussed detailedly.