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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   

3.
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   

4.
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   

5.
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   

6.
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   

7.
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   

8.
过氧杂多化合物催化环己烯氧化合成己二酸   总被引:19,自引:3,他引:19  
合成了一系列过氧杂多化合物,考察了其在环己烯氧化合成己二酸反应中的活性。结果表明,过氧磷钨十六烷基三甲基铵在环己烯氧化合成己二酸的过程中显示了较高的催化活性,反应6h,己二酸的收率可达55 9%。考察了温度、时间、反应物加入量、H2O2加入量、催化剂加入量等一系列条件对反应的影响,确定了最佳反应条件。  相似文献   

9.
采用程序升温法,以正己烷为碳化原料制备碳化钼,对噻吩加氢脱硫活性进行了评价。通过X射线衍射分析、X射线光电子能谱分析、比表面测定等方法对试样进行了表征。结果表明,在正己烷/氢气(摩尔比)为0.006,反应温度为600℃的条件下,反应具有较好的碳化效果。  相似文献   

10.
合成两种新型三唑-香兰素Schif碱和四种金属配合物。通过元素分析、红外光谱、电导率、电子光谱等手段对所合成的化合物进行结构表征,认为该配合物为21(LM)型的单核配合物,配位环境为金属离子四配位,分别与两个配体酚羟基中的氧和两个氯配位。将其六种化合物作催化剂,催化CO2与环氧乙烷生成碳酸乙烯酯的反应。结果表明,六种催化剂均对该反应有较高的催化活性,选择性单一,配合物催化活性高于配体。初步探讨了该类反应的机理。  相似文献   

11.
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   

12.
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   

13.
应用加压原位红外光谱技术,在6.0MPa、180℃羰化反应条件下考察了异戊二烯、1-辛烯、环戊二烯、混合碳五馏份及脱去环戊二烯的碳五馏份的羰基合成反应。加压原位红外光谱试验结果表明,单烯烃羰化生成己醇;异戊二烯先加氢后羰化亦生成己醇;环戊二烯与钴-膦催化剂生成二羰基环戊二烯钴配合物,从而影响了催化剂的活性。  相似文献   

14.
15.
郎需进  李丽霞  李进 《润滑油》2011,26(3):42-44,48
应用红外光谱技术对调合润滑油常用的传统聚异丁烯丁二酰亚胺类无灰分散剂进行分析,确定了单挂、双挂和高分子量聚异丁烯丁二酰亚胺无灰分散剂的红外光谱特征;并对国内和国外几种新型杂元素化(硼化、磷化)聚异丁烯丁二酰亚胺产品进行了红外特征对比分析,指出了国内外产品质量差异的根本原因。  相似文献   

16.
新型延缓交联剂L-2的研制   总被引:6,自引:0,他引:6  
针对油田高温、高盐调驱使用延缓交联剂的需要,同时兼顾环境保护,采用络合法,经过分子设计,研制了一种新型有机铝延缓交联剂L-2,并对其性能进行了评价。该产品为无色无味液体,延缓时间在6~48h内可调,能与聚合物形成体型结构,交联强度大,在100℃、矿化度为250g/L的条件下,仍然表现出较好的交联效果,符合环保要求,而且合成工艺简单,可操作性强,同时在降低产品生产成本,提高其综合性能方面都具有较高的应用价值。  相似文献   

17.
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   

18.
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   

19.
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   

20.
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   

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