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Several deasphalted oil samples were obtained from vacuum residuum and FCC slurry oil deasphalted at continuous propane deasaphalting pilot equipment.

研究发现,减压渣油和掺兑催化油浆的减压渣油的丙烷脱沥青油具有较好的产物分布和选择性;而催化油浆的脱沥青油的裂化性能较差。

It is shown in this paper that native ribonuclease and proinsulin can be nearly quantitatively formed catalyzed by PDI from a mixture of their S-sulfonated derivatives independent of the presence of each other.

我们研究了在体外PDI同时催化RNase和胰岛素原的S-磺酸型衍生物形成天然二硫键,结果表明,在合适的条件下,两者形成天然二硫键的产率互相不受影响,因此,我们推测PDI在生物体内可以同时催化多种蛋白质二硫键的形成。

The most appropriate catalyzed temprature and pH for it is 60 ℃ and 5.5 respectively. It has the extreme stability at the temperatures no more than 50 ℃.The CMC-Na has the protective effect on the cellulase. The pH stability range of the purified cellulase is 4 ~ 8. Zn2+, Ca2+, Mg2+, K+, Li+ can ativate the cellulase. And cellulase can mainly decompose CMC and salicin, but can decompose other substrates feebly.

对这个组分的催化性质进行了研究,该酶的最适催化温度60 ℃,pH值为5.5,在50 ℃以下酶的稳定性较好,70 ℃条件下底物对酶有较强的保护作用,该酶的pH稳定性范围为4~8, Zn2+,Ca2+,Mg2+,K+,Li+对酶活有促进作用,Mn2+、Co2+、、Fe2+、Fe3+对酶活起抑制作用,酶对CMC-Na和水杨素有分解作用,而不分解脱脂棉和滤纸。

Through lots of tests, the new technology of preparing the polymeric ferric aluminum silicate sulfate by using the waste-acid of Ti02-industriy and the coal fly ash has been designed. The highest Al-acid stripping rate can be achieved by the waste sulfate acid under boiling degree for 1. 5h when the mass ratio between NaCl and Coal Fly ash is 0. 05:1, as well as that between Coal Fly ash and Waste Acid ratio is 1:10. By means of the oxidation-polymerized reaction under 40-50*C and normal pressure, using NaNCkas catalyst and air as oxidation, the polymeric ferric aluminum sulfate can be obtained. The poly-silicic acid is polymerized with soluble glass in the optimum conditions of pH=5-6 and the concentration of Si02 is about 3%. The inorganic high molecule coagulant of PFASS is synthesized with the poly-silicic acid into the solution of polymeric ferric aluminum sulfate.

本论文通过大量的试验,研究开发出了用粉煤灰及钛白废酸制取聚合硫酸硅酸铁铝的新工艺,其最佳工艺条件为:于沸点温度,以NaCl为助溶剂(NaCl与粉煤灰质量比为0.05:1),以钛白废酸浸取粉煤灰(固液比为1:10)中的铝1.5小时,最大浸取率可达40%;经过滤洗涤后,调节滤液pH至2.0左右,以NANO_2为催化剂(NaNO_2用量为滤液中FeSO_4·7H_2O量的3%),空气为氧化剂,于40-50℃进行常压催化氧化反应,制取聚合硫酸铁铝,催化氧化时间为2小时;将工业水玻璃稀释至3%左右,调节其pH于5-6,室温下制备活性聚硅酸;将活性聚硅酸与聚合硫酸铁铝按照一定比例复合,经熟化,即制得新型无机高分子混凝剂PFASS。

The 35,000-foot, 144-inch internal diameter pipeline will use gravity to convey at least 320 mgd of flow from an existing combined sewer overflow structure near the city's Belmont Advanced Wastewater Treatment plant and two large diversion structures connecting to existing city interceptor sewers, along with the connection of a future 150 mgd pumping station from the City's future planned deep tunnel combined sewer overflow collection and storage system, to the pumping station at the Southport AWT plant.

三万五千呎,144英寸内部口径管道将利用重力传递至少320催化裂化MGD流量从现有合流溢流结构附近城市的belmont先进的废水处理植物和两个大型引水结构,以连接现有的城市截流污水随着连接未来催化裂化MGD150个抽水站,从城市的未来规划深的地下隧道,合流溢流收集和储存系统,抽水站southport页面厂。

We also found for the first time that the reaction between ketone and alcohol to ketal was catalyzed by benzamide and their derivatives, and the related mechanism is proposed. Furthermore, under the same irradiation condition, the photo-reaction of succimide with alcohol as well as the photolysis of benzene sulfonamide was also found and studied.

并首次发现在紫外光激发下,苯甲酰胺对酮和醇生成缩酮的反应有一定的催化作用,进而对一系列芳酰胺类化合物作了对比实验,发现芳酰胺类化合物均能对缩酮的生成有催化作用,并对芳酰胺的作用机理进行了初步探讨。

The relationship of the surface structure of the resin and its activity is investigated.

研究了树脂的表面结构特点及其与催化性能的关系,并从树脂催化作用的模式解释在α-位阻脂肪酸酯化中的活性显著大于硫酸的活性。

In order to obtain a highly efficient GPX mimic, we propose that enzyme model must recognize and bind GSH, and that Sec is at an appropriate position to interact with the thiol of GSH.

基于GPX的酶学特点,我们认为:为了获得高催化效率的GPX模拟物,其关键在于酶模型对底物GSH的识别和结合,催化官能团的合适放置。

The alloy catalyst was found to be unstable in the acidic solution because of the electrochemical and chemical dissolution of the catalyst.

发现在酸性溶液中,钯铁合金催化剂对氧还原反应的催化活性不稳定,原因是钯铁合金催化剂在酸性溶液中发生电化学/化学溶解;在碱性溶液中,覆盖在电极表面的钯铁合金催化剂的质量及电化学活性面积在电化学扫描过程中不发生明显变化,保持对氧还原反应的催化活性,证明钯铁合金催化剂在碱性介质中非常稳定。

C. Functionalization of [60]Fullerene with Vaporous Reagents via Its Calix[8] arene Complex Supramolacular complexes are applied widely in synthesis chemistry.

结果表明,它们均是有效的硅氢化催化剂,并具有某些独特的催化性能,如在催化苯乙烯的硅氢加成时,以高达85%-100%的区域选择性得到α-加成物。

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