对叔丁基邻苯二酚的生产与应用

介绍了对叔丁基邻苯二酚的应用,简述目前国内采用的两种传统工艺生产方法,以及固本酸为催化剂的新工艺方法,相互比较,显而易见,新工艺法将是今后工业生产的发展方向。     

Electrochemical and optical microscopy study of red pepper seed oil corrosion inhibition by self-assembled monolayers (SAM) on 304 SS

Corrosion inhibition by red pepper seed oil (capsicol) on 304 stainless steel (SS) was studied in 1 M HCl solutions. The oil was extracted from the seed of the red pepper (Capsicum annuum L.), which was cultivated in East Java, Indonesia. Electrochemical and optical microscopy techniques were used to observe the performance of the corrosion-inhibition process. The inhibition efficiency reached 92.32% for an immersion time in capsicol of 30 min at room temperature and decreased with temperature. This inhibition behavior by capsicol was also justified by comparing the pictures of the samples with and without the inhibitor after corroding for one week.     

碳酸盐岩储层酸化液添加剂综述

介绍了酸化作业中使用的一些主要添加剂如增稠剂、缓蚀剂、酸缓速剂、铁稳定剂、粘土稳定剂及降滤失剂、酸液助排剂等产品的种类、性能特点及其国内外研究现状和发展动向。指出许多酸化液添加剂都在朝着耐温、抗盐、无地层损害的方向发展,提高强化处理效果。     

高性能复配型土酸酸化缓蚀剂V—1

为了防止地层酸化时土酸对钢铁设备及井下油、套管的腐蚀，研制了Ｖ１型土酸酸化缓蚀剂。该剂是以一种有机胺盐、炔醇和商品缓蚀剂Ｄｏｄｉｇｅｎ９５为主要成分的复配型缓蚀剂，适用于各种土酸酸化体系。本文介绍了该剂的室内性能评价和现场试验结果。     

百色油田油井结蜡及清防蜡处理

本文了滇黔桂百色油田的严重结蜡情况，清防蜡剂的筛选，使用筛选出的防蜡剂ＪＳ２进行油清防蜡处理的工艺方法和效果。自１９９０年１０月起，在百色油田各区块６２口油井采用不停产加入油套环空，加入后关井或在油套管间循环２－４小时，挤入油层等方法进行的清防蜡作业，除井温过低的一个井外，全部获得成功。     

The study of the La(NO;3)3 inhibition on X70 pipeline steel in 3.0(wt.%) NaCl solution

Lanthanum nitrate has been investigated as corrosion inhibitor of X70 pipeline steel in 3.0 (wt.%) NaCl solution using electrochemical techniques such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in conjunction with scanning electron microscopy (SEM) and energy dispersive X‐ray detector (EDX) techniques. The results showed that La(NO₃)₃ belonged to the film‐formed mixed inhibitors, which can form a compact network over the whole surface of X70 pipeline steel. The inhibition effect of La(NO₃)₃ on X70 steel reinforced with the increase of the concentration itself. The EDX analysis showed that lanthanum ions were found to participate in the network film formed on the sample surface.     

Combined Computational and Experimental Study on the Adsorption and Inhibition Effects of N2O2 Schiff Base on the Corrosion of API 5L Grade B Steel in 1 mol/L HCI

The electrochemical behavior of low carbon steel （API 5L grade B） in 1 mol/L HCI solution with different concentrations of N,Nr-bis（4-formylphenol）-trimethylenediamine Schiff base was studied by electrochemical techniques and density functional theory analysis. The inhibition efficiency was found to increase with increasing inhibitor concentration and decreased with increasing temperature. The high inhibition efficiency was attributed to the blocking of active sites by adsorption of inhibitor molecules on the steel surface. Thermodynamic parameters for the adsorption and activation processes were determined. Galvanostatic polarization data indicated that Schiff base act as a mixed-type inhibitor and the adsorption isotherm obeyed the Langmuir adsorption isotherm. Results obtained from quantum chemical studies show excellent correlations between the quantum chemical parameters and the experimental inhibition efficiencies using density functional theory at the B3LYP/6-31G（d,p） and B3LYP/3-21G basis set levels and ab initio calculations using HF/6-31G（d,p） and HF/3-21G methods.     

Selective inhibition of nitrite oxidation by chlorate dosing in aerobic granules

Partial nitrification was successfully achieved with addition of 5mM KClO(3) in the aerobic granules system. Batch tests demonstrated that KClO(3) selectively inhibited nitrite-oxidizing bacteria (NOB) but not ammonia-oxidizing bacteria (AOB). During stable partial nitrification, the influent pH was kept at 7.8-8.2, while the DO and temperature were not controlled in the SBR. When the NH(4)-N and COD levels were kept at 100mg/l and 400mg/l in the influent, the NH(4)-N and COD removal efficiencies reached 98.93% and 78.65%, respectively. The NO(2)-N accounted for 92.95% of the NO(χ)-N (NO(2)-N+NO(3)-N) in the effluent. Furthermore, about 90% of the chlorate was reduced to nontoxic chloride, thus it would not cause environmental problem. SEM showed that the main composition of the aerobic granules was bacilli and coccus bacteria. FISH analysis revealed that AOB became the dominant nitrifying bacteria, whereas NOB were detected only in low abundance. Chlorate could be used to control the development and maintenance of aerobic granules sludge for partial nitrification.     

水溶性有机去膜液的主要成分及其作用原理概述

文章在大量的文献基础上总结了水溶性有机去膜液的主要成分,包括有机胺、有机溶剂、加速剂、缓蚀剂和消泡剂,并介绍了各种成分在去膜过程中的作用原理。重点介绍应用于去膜液中的各类缓蚀剂及其缓蚀机理,缓蚀剂包括含氮化合物、含硫化合物、有机酸、芳香族羟基化合物等。     

γ辐照TBP-正十二烷体系酸性长链磷酸酯的抑制

本文通过元素分析,IR谱及MS谱等方法研究了TBP—正十二烷体系中酸性强络合辐解产物的性质和结构。用同位素示踪方法对长链酸性磷酸酯的生成机理进行了探讨并找到了能抑制长链酸性磷酸酯的有效的抑制剂。