对实验教材中乙酸乙酯合成方法的改进

以乙酸和无水乙醇为原料 ,用五水合氯化高锡为催化剂合成乙酸乙酯 .讨论了SnCl4 的用量 ,原料配比 ,反应温度 ,反应时间对酯的收率的影响     

H2TBP和H2TP(o-NO2)TBP的Sn(Ⅳ)、Mn(Ⅲ)配合物电化学性质

研究了H2TBP，H2TP（o-NO2)TBP的Sn(Ⅳ）和Mn(Ⅲ)配合物的电化学性质，并用Nicholson方法测这了上述配合物的非均相电子传递速率常数。     

硫化锡金粉制法探讨

硫化锡金粉制备工艺简单,成本低廉,但由于其光泽度和金色失真不被市场认可.通过对反应条件的探讨,找到了一种制备具有一定市场的金粉的方法.     

Preparation and Tribological Performance of Novel Organotin Compound as Lubricant Additive

Oil-soluble stannous naphthenate (SN) is synthesized by using naphthenatic acid and SnO. And its molecular structure is confirmed by IR and multielement oil analyzer (MOA). The tribological performances of the organotin as lubricant additive are evaluated with a four-ball friction and wear tester. These experiments indicate that the wear scar diameter (WSD) and friction coefficient are diminished while the load-carrying capability increased by comparison with that of base oil. The elemental composition of the boundary lubricating film is examined by means of Auger electron spectroscopy (AES). Synergistic effect is found in the load-carrying capability of the complex of SN and sulfured olefin. The analytical results of AES indicate that the good performance of stannous naphthenate is attributed to the formation of a boundary lubricating film containing Sn on the rubbed surface.     

湖南省衡东锡岩洞岩溶风景资源开发研究

衡东锡岩洞以丰富的洞穴岩溶风景资源与古老的洞穴文化古迹紧密结合为特色，具有良好的开发价值，同时也具有良好的开发条件。经过几年的开发已初见成效，但也存在一些问题。作者还对开发衡东锡岩洞提出了一些合理的建议。     

四氯化锡催化合成橙花素

四氯化锡能够代替硫酸作为醚化催化剂.在五水四氯化锡存在下,由β 萘酚和乙醇合成了橙花素(β 萘乙醚).当β 萘酚、乙醇和四氯化锡的物质的量比为1:4:0.114,回流反应12h,醚收率达74.4%.     

Synergetic effect of stannate with o-aminophenol on inhibiting H2 evolution of A1 anode in strong alkaline media

The performance of Al-alloy anode in 4 mol/L KOH with and without stannate and o-aminophenol at 25℃ and 55℃ was studied by hydrogen collection, potentiodynamic polarization and electrochemical impedance spectrum, o-aminophenol acts as a perfect inhibitor because of its adsorbability and forming chelate complex at its optimum concentration of 0.4 mol/L. Stannate enhances the inhibition of o-aminophenol and improves the activity of Al-alloy because of its reduction to tin. There is synergetic effect of stannate with o-aminophenol on the behavior of Al-alloy, and the inhibitive efficiency at 55℃ is better than that at 25 ℃.     

四氯化锡催化合成橙花素

四氯化锡能够代替硫酸作为醚化催化剂，在五水四氯化锡存在下，由β-萘酚和乙醇合成了橙花素(β-萘乙醚)，当β-萘酚、乙醇和四氯化锡的物质的量比为1：4：0．114，回流反应12h，醚收率达74．4％。     

湖南经济的地域差异

将湖南省划分为三个地区——湘东、湘中和湘西,利用锡尔指数,从地域间差异和地城内部差异两方面对1997年到2006年湖南经济的地域差异进行研究。可以看出:湖南经济的地域差异的主要形成因素是地域间的差异,特别是湘东地区与其他两个地区间的差异较明显,应针对目前湖南经济差异的现状,采取一系列建设性的措施,以使其差异缩小。     

对一道无机化学题解的看法

大连理工大学无机化学教研室编著的“无机化学解题指导”中有这样的一则习题,“为什么配制SnCl2溶液时必须加入盐酸和锡粒？”前者的原因是因为SnCl2易水解SnCl2＋H2O=Sn（OH）Cl↓＋HCl为防止其水解,配制SnCl2溶液时,需加相应的酸,即盐酸。在解释后者的原因时,指导书中是这样讲的①：Sn2 有还原性．易被空气中的氧所氧化。2Sn2 ＋O2＋4H →2Sn4 ＋2H2O有关电极反应的标准电极电势如下：Sn2 ＋2e-SnSn4 ＋2e-Sn2 0．154VO2＋4H ＋4e－2H2O1．229V如果Sn2 被氧化成Sn4 ,溶液变成SnCl4溶液失去还原性。当有锡位存在时,…