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水蒸气焙烧对REY分子筛性能的影响 总被引:1,自引:0,他引:1
分别采用空气焙烧和水蒸气焙烧制备出REY分子筛,用XRD和IR方法考察了它们的结构稳定性和稀土迁移状况,并在纯烃做反及小型固定流化床装置上考察其反应性能,发现水蒸气焙烧能显著提高REY分子筛的稳定性和反应活性。 相似文献
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WDS-2型杀菌剂是目前在中石化西南油气分公司广泛应用的压裂液杀菌剂,其效果良好,但在同一个区块长期使用同一类型的杀菌剂,微生物会产生抗药性。为此,研制出新型复合杀菌剂GCY-6,并对二者进行了详细的性能对比评价实验。200余个不同温度、不同浓度下基液粘度保留率数据表明,GCY-6性能略优于WDS-2;腐生菌的杀菌率评价实验结果表明,GCY-6的杀菌率在相同浓度下,明显优于WDS-2。且GCY-6合成的方法可靠、操作方便,具有工业化应用的价值。 相似文献
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水热脱铝是改进Y型分子筛水热稳定性和催化性能的重要方法。通过IR、XRD、TEM等多种分析测试手段对HY、NH4Y和USY分子筛的表征,对水热-化学法(从HY制备USY-Ⅱ)和水热法(从NH4Y制备USY-Ⅰ)两种不同制备方法得到的不同阶段样品的相对结晶度的变化规律进行研究。结果发现,从HY制备US-Ⅱ时,结晶度变化规律反常,即产品USY-Ⅱ分子筛结晶度大于水热脱铝前的先驱体HY分子筛结晶度,且USY-Ⅱ产品结晶度高达92%,该产品同时具有足够多的适合重质油加工的二次孔结构。 相似文献
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Aibassov Erkin Zhakenovich ;Kenzhaliev Bagdaulet Kenzhalievich ;Tussupbaev Nessipbay Kuandykovich ;Berkinbaeva Ainura ;Chukmanova Marzhan ;Iskhakova Renata ;Bulenbayev Maxat Zhumabaevich 《化学与化工:英文版》2014,(7):751-756
This paper presents the results of the search of biologically active uranium compounds such as amino acids. We first received and examined X-ray and IR (infrared radiation) spectroscopy of uranium complexes with α- and β-amino acids in aqueous and organic solution. We proposed a method for direct synthesis of complex organic compounds of uranium chloride UO2Cl2 with α- andβ-amino acids for the synthesis of drugs for the treatment of cancer. 相似文献
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Aibassov Erkin Zhakenovich Yemelyanova Valentina Stepanovna Shakieva Tatyana Vladimirovna Tussupbaev Nesipbay Kuandykovich Imanbaev Klysh Bulenbayev Maxat Zhumabaevich 《化学与化工:英文版》2014,(10):996-1000
We first received and examined X-ray spectroscopy of uranium catalyst. We studied magnetic and relativistic effects in uranium catalysts, and the movement of charged particles under the effect of a uniform electric field and uniform magnetic field. We proposed the mechanism of the motion of charged particles under the influence of a uniform electric field and a uniform magnetic field. 相似文献
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To improve the understanding of wettability, especially the influence of different crude oil colloids, wetting experiments on quartz sand and kaolin were performed with an asphaltene rich oil. A two-step procedure was developed to investigate the wetting behavior. In the first step, those crude oil components were extracted, which preferentially wet solid surfaces. The extracted crude oil components were characterized in a second step. The composition of the fractions extracted with different solvents are different. The acetone fractions extracted from quartz sand are rich in compounds containing nitrogen, whereas the compounds containing sulphur predominate in the chloroform fraction extracted from quartz sand. IR spectroscopy of the extracted fractions shows that carbonyl compounds are abundant in the methanol/chloroform and acetone/chloroform fractions extracted from quartz sand. The chloroform fraction is poor in carbonyl group-containing compounds. In agreement with elemental analysis, a strong signal for C–N groups in the IR spectra is found for acetone/chloroform and methanol/chloroform fractions, extracted from the quartz sand system. On the other hand, a significant, strong IR-peak representing S=O containing components is observed in the acetone and acetone/chloroform fractions, extracted from quartz sand. 相似文献
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Irek I. Mukhamatdinov Sergey A. Sitnov Olga V. Slavkina Konstantin A. Bugaev Alexander V. Laikov 《Petroleum Science and Technology》2019,37(12):1410-1416
In this paper, we investigated the influence of steam treatment on structural group composition of resins and asphaltenes of heavy oil. The object of investigation was oil-saturated rocks from Riphean-Vendian complex. The extracted crude oil was determined as a high-viscous fluid. The resins and asphaltenes destructed in a small extent due to thermal treatment. The oil-soluble iron-based catalyst intensified the destructive processes. The content of sulfur compounds (-SO) in resins and asphaltenes drastically decreased due to reduction reaction of sulfoxide to sulfide and hydrogen sulfide. The results showed that catalytic aquathermolysis, even at low temperature ranges, promoted the cracking reaction of most macromolecular components and increased the content of light fractions of heavy oil. Consequently, it reduced its viscosity. 相似文献
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新型氨基亚甲基膦酸盐的合成及防垢性能评价 总被引:1,自引:0,他引:1
合成了十二胺基二亚甲基膦酸盐(DAMP)、十八胺基二亚甲基膦酸盐(OAMP)和二辛胺基亚甲基膦酸盐(DOAMP)三种有机膦酸盐。考察了影响DAMP有机膦收率的因素.确定了理想的反应条件:甲醛/十二胺摩尔比2.5、亚磷酸/十二胺摩尔比3.5、反应温度105℃、反应时间3.5h、加水量15mL、盐酸加入量5mL。利用红外光谱与核磁共振对合成产物结构进行了表征分析。对其防垢性能进行了测定,其中DAMP和OAMP在浓度为10mg/L时,对硫酸钙的防垢率分别为97.373%和92.078%。 相似文献
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由4-氨基-3,5-二取代-1,2,4-三唑与3-甲氧基-4-羟基苯甲醛反应得到两种Schif碱(1)和(2),将这两种Schif碱作为配体(L),分别与金属高氯酸盐Cu(C1O4)2·6H2O和Co(C1O4)2·6H2O反应得到四种单核配合物,并通过元素分析、红外光谱、电子光谱、摩尔电导率、室温磁化率等手段对配合物进行了表征。认为该配合物为2∶1型(L∶M),金属离子(M)为四配位,分别与两个配体羟基、甲氧基中的氧配位。首次将这类配体和配合物作为均相催化剂,考察其对CO2与环氧乙烷合成碳酸乙烯酯的催化性能,并择述了其催化作用的几种可能机理。 相似文献
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《Food Control》2014
A novel non-destructive method for distinguishing frozen and defrosted fruit and berries using X-ray dark-field radiography is proposed. In this proof-of-principle study we are able to discern between the raw and frozen state of two kinds of berries and a piece of mandarin as well as between the raw and defrosted state of one of the berries. Contrast-to-noise (CNR) values of around 2.5 are obtained with X-ray dark-field radiography whereas almost no contrast is found with conventional X-ray radiography with CNR values around 0.2. 相似文献
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Jia Chaoyang Liang Shuyuan Liu Lei Shao Xue Zhang Longli Wang Fangzhu Jiang Cuiyu 《中国炼油与石油化工》2021,23(1):58-66
Seven kinds of Schiff base metal complexes(C1-C7)were synthesized by the reaction of substituted salicylaldehyde Schiff base with cobalt nitrate,nickel nitrate,and copper nitrate,respectively.The oxygen carrying performance,and the catalytic property of complexes for the oxidation of model sulfides 1-hexanethiol,dibutyl sulfide,and 2-methylthiophene along with their influencing factors were explored,while the oxidized products of the model sulfides were also analyzed and characterized.The results show that the catalytic oxidation property of the complexes is determined by their oxygen carrying performance and solubility in n-octane.The oxygen carrying performance of the complexes is mainly affected by the central ion species,the electronic effects,and the spatial effects of the substituents as well as the degree of conjugation.More specifically,the oxygen carrying performance can be improved by enhancing the oxygenation capacity of the central metal ions,increasing the electron donating ability of the ligand substituent,and diminishing the steric hindrance as well as extending the conjugated chain.Complexes C7 were found to be with high oxygen carrying capacity and high solubility in n-octane,which shows the best catalytic oxidation property,and the oxidation conversion rates for 1-hexylthiol,dibutyl sulfide,and 2-methylthiophene are 74.2%,65.1%,and 22.7%,respectively.Upon using the oxidation catalyst of Schiff base metal complexes,three sulfides can be oxidized by oxygen to form sulfones and sulfoxides.1-Hexanethiol and dibutyl sulfide will continue to be oxidized to form sulfates and sulfites. 相似文献
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Asphaltene samples obtained from crude processed at two Indian refineries were characterized for chemical composition and structure by nuclear magnetic resonance (NMR), X-ray diffractometry (XRD), fluorescence spectroscopic techniques, and chromatographic (column and GPC) techniques. Estimation of NMR average structural parameters were obtained by combined 1H, NMR 13C, NMR DEPT-45, and QUAT pulse sequence spectral editing techniques. The macrostructure and crystalline parameters of these samples were obtained by XRD. The nature of the functional groups have been obtained by IR technique. A combined NMR and XRD parameters were used to estimate the size of average aromatic structural units. Asphaltenes from one of the crudes (ASP-A) was found to be highly pericondensed, highly substituted, and higher molecular size compared to ASP-B asphaltene molecules. The number of aromatic sheets per unit sheets are 3.7 and 2.5 in the sample ASP-A and ASP-B, respectively. Both the asphaltene molecules in the samples have periodically and systematic arrangement of aromatic sheets in the unit sheet. The number of aromatic rings per unit sheet in ASP-A and ASP-B are 6.0 and 5.0, respectively. The fluorescence spectral studies has also exhibited λmax (the wavelength of maximum intensity) at 505 and 509 nm confirming to pericondensed higher polycondensed aromatic ring system in both the samples. The analysis of liquid chromatographic fractions of these samples show that each sample is composed of several polycondensed aromatic systems where unit sheet of ring sizes vary from 1.8 to 6.3 with varying molecular sizes. These structural parameters allowed a model structure of the asphaltenes to be constructed. 相似文献