Petroleum Chemistry最新文献_第10页

Structural and Acidic Properties of Ion-Exchanged Mazzite 离子交换马兹石的结构和酸性特性

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-03-23 DOI: 10.1134/S0965544123110099

Alessandro Contini, Martin Jendrlin, Aqeel Al-Ani, Vladimir Zholobenko

{"title":"Structural and Acidic Properties of Ion-Exchanged Mazzite","authors":"Alessandro Contini, Martin Jendrlin, Aqeel Al-Ani, Vladimir Zholobenko","doi":"10.1134/S0965544123110099","DOIUrl":"10.1134/S0965544123110099","url":null,"abstract":"A range of modified MAZ and LTL zeolites have been prepared and ion-exchanged with a series of alkali metal cations. It has been shown that K, Rb and Cs can be readily introduced into the MAZ structure with ~2 cations ion-exchanged per unit cell. In contrast, less than one cation of Li or Na per unit cell has been introduced under similar conditions. Ion-exchanged zeolites have been characterised using Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy, X-ray fluorescence and N2 physisorption in order to gain a better understanding of their structural and acidic properties. The FTIR data indicate considerable heterogeneity of the bridging OH groups in mazzite. The concentration of both Brønsted and Lewis acid sites detected in MAZ using pyridine as a probe molecule is lower than expected from its chemical composition, with the relative accessibility of the bridging OH-groups varying from 16% for H-MAZ to 28% for K-exchanged samples. This is in agreement with the N2 adsorption-desorption data showing a rather low micropore volume for the ion-exchanged materials and with the NH3-TPD results implying considerable transport limitations. This work demonstrates that the channel structure of mazzite is partially blocked resulting in a decreased micropore volume and limited access to the acid sites.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 2","pages":"235 - 244"},"PeriodicalIF":1.3,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insight into Relationship between the Products Distribution and Molecular Properties in Carboxylation between Benzene Polycarboxylic Acids and CO2 苯多羧酸与二氧化碳羧化过程中产物分布与分子特性之间关系的深入研究

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-03-23 DOI: 10.1134/S0965544124010018

Rong Wang, Gang Liu, Yu-Qin Sun, Yu-Gao Wang, Jun Shen, Yan-Xia Niu

{"title":"Insight into Relationship between the Products Distribution and Molecular Properties in Carboxylation between Benzene Polycarboxylic Acids and CO2","authors":"Rong Wang, Gang Liu, Yu-Qin Sun, Yu-Gao Wang, Jun Shen, Yan-Xia Niu","doi":"10.1134/S0965544124010018","DOIUrl":"10.1134/S0965544124010018","url":null,"abstract":"CO2 is an important carbon resource, which could be chemically utilized by carboxylation. In this paper, the carboxylation between benzene polycarboxylic acids (BPCAs) and CO2 was conducted using Cs2CO3 as a catalyst. The relationship between the product distribution and Mulliken charge at the reaction site of BPCAs was explored by combining experiments and quantum chemical calculations of molecular properties in the reaction of carboxylation between BPCAs and CO2. The negative Mulliken charge was found to facilitate carboxylation at the reaction site of BPCAs. Hydrogen abstraction was the rate-determining step for carboxylation, and its energy barrier was calculated for different C–H in the BPCA molecule. The results showed that the C–H bond with the more negative Mulliken charge was more easily deprotonated, which further verified the above conclusion. The study provides a convenient approach to predict a product distribution for carboxylation between BPCAs and CO2 according to the Mulliken charge of BPCAs.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 6","pages":"717 - 727"},"PeriodicalIF":1.3,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Simple Method to Determine Low Metal Concentrations in Naphtha by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) 利用电感耦合等离子体光学发射光谱法 (ICP-OES) 测定石脑油中低金属浓度的简单方法

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-03-23 DOI: 10.1134/S0965544123110063

Ahmed Shawki Ali, Ashraf M. Ashmawy, Hazem F. Khalil, Elsayed M. Elnaggar

{"title":"A Simple Method to Determine Low Metal Concentrations in Naphtha by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES)","authors":"Ahmed Shawki Ali, Ashraf M. Ashmawy, Hazem F. Khalil, Elsayed M. Elnaggar","doi":"10.1134/S0965544123110063","DOIUrl":"10.1134/S0965544123110063","url":null,"abstract":"Inductively coupled plasma optical emission spectrometry (ICP-OES) was used in this study as an alternative analytical approach for measuring Al, Ca, Cu, Na, Ni, Si, Fe, P, V, and Zn in high-volatile petroleum products (naphtha) at the part per billion (ppb) sensitivity level. The distillation stage was intended for pre-concentrating metals by the matrix removal. Such multiplication of metal concentrations provided the possibility to measure them within the sensitivity range of the ICP-OES instrument. The reliability of such measurements was demonstrated for a wide concentration range of each metal, and the validation of the method was performed. Based on the standard deviations of nine successive measurements performed for 10 metals, the precision (repeatability) of the method for samples with concentrated metals was calculated. The values of this index (in ppb) were the following: 20.8 (Al), 20.4 (Ca), 13.7 (Na), 19.09 (Ni), 13.4 (Fe), 1.4 (P), 26.9 (V), and 45.15 (Zn). The reproducibility of the method was determined for nine measurements performed within several days. The results of recovery studies were excellent for the most part of the tested metals including Al (100.33%), Na (102%), and V (96.55%). The linearity test performed for calcium and silicon showed R = 0.999 for both elements. Depending on the standard deviation obtained in the linearity test, the limit of detection (LOD) range for all studied metals was determined to be between 2 and 10 ppb.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 5","pages":"623 - 632"},"PeriodicalIF":1.3,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Functionalized Ionic Liquids as Asphaltene Dispersants: A Comparison between Aliphatic and Aromatic Cations 作为沥青分散剂的官能化离子液体：脂肪族阳离子与芳香族阳离子的比较

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-03-09 DOI: 10.1134/S0965544123110075

Edris Mardani, Babak Mokhtari, Bahram Soltani Soulgani, Shirin Baghersaei

引用次数: 0

Oxidation of Organic Substrates with Sodium Hypochlorite (A Review) 次氯酸钠氧化有机底物（综述）

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-03-09 DOI: 10.1134/S0965544123110051

P. D. Domashkina, K. P. Gevorgyan, A. V. Akopyan

引用次数: 0

Synthesis and Performance of a Salt-Tolerant Poly(AM/NVP/APEG/DMAAC-18) Polymer 耐盐性聚（AM/NVP/APEG/DMAAC-18）聚合物的合成与性能

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-03-09 DOI: 10.1134/S096554412311004X

Haiyang Tian, Jiapeng Zheng, Tong Peng, Xiaoping Qin

{"title":"Synthesis and Performance of a Salt-Tolerant Poly(AM/NVP/APEG/DMAAC-18) Polymer","authors":"Haiyang Tian, Jiapeng Zheng, Tong Peng, Xiaoping Qin","doi":"10.1134/S096554412311004X","DOIUrl":"10.1134/S096554412311004X","url":null,"abstract":"A salt-tolerant polymer based on hydrophobically associating water-soluble polymers of 1-vinyl-2-pyrrolidone, allyl polyethylene glycol, acrylamide, and N,N′-dimethyl octadecyl allyl ammonium chloride has been synthesized. Salt thickening and rheological performance of the polymer solutions have been studied. Polymer solutions have demonstrated an excellent uninterruptedly thickening ability within a wide range of salt concentrations. When concentrations of NaCl and CaCl2 reached 19.9 and 19.3%, the apparent viscosity of a 1% polymer solution increased to 660 and 330 mPa s, respectively. Meanwhile, polymer solutions containing high NaCl or CaCl2 concentrations showed good viscoelasticity, shear resistance, and temperature resistance. A scanning electron microscopy showed that increase in a salt concentration enhanced the hydrophobic association strength of polymer solutions and increased the density of the formed network structure, which was macroscopically manifested as a viscosity increase. The results of this study may promote the research and development of polymers resistant to extreme salt concentrations.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"63 11","pages":"1365 - 1372"},"PeriodicalIF":1.3,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140053675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-Catalytic Partial Oxidation of C2+ Hydrocarbon/H2 Mixtures C2+ 碳氢化合物/H2 混合物的非催化部分氧化作用

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-03-09 DOI: 10.1134/S0965544123110014

V. I. Savchenko, A. V. Ozerskii, A. V. Nikitin, I. V. Sedov, V. S. Arutyunov

{"title":"Non-Catalytic Partial Oxidation of C2+ Hydrocarbon/H2 Mixtures","authors":"V. I. Savchenko, A. V. Ozerskii, A. V. Nikitin, I. V. Sedov, V. S. Arutyunov","doi":"10.1134/S0965544123110014","DOIUrl":"10.1134/S0965544123110014","url":null,"abstract":"The paper reports the results of a kinetic and thermodynamic analysis of non-catalytic partial oxidation of methane and C2–C4 hydrocarbon/hydrogen mixtures (C/H = 1 : 4) at 1400–1700 K. The hydrocarbon conversion sequence and the time periods of the major process stages were identified for isothermal conditions. The initial stage of the oxidative conversion of C2+ hydrocarbons consists of their pyrolysis, primarily into ethylene and propylene, followed by oxidation of the pyrolysis products. In this respect, the kinetics of C2+ hydrocarbon oxidative conversion are different from those of methane conversion, marked by the almost simultaneous and significantly slower occurrence of pyrolysis and oxidation. The subsequent stages involve steam and dry reforming of the oxidation products, namely acetylene and methane; these stages continue until the main products (H2, CO, CO2, and H2O) reach an equilibrium distribution for the given temperature. The study findings are important for the optimization of various techniques for high-temperature syngas production via partial oxidation of C2+ hydrocarbons, as well as Moderate or Intense Low-Oxygen Dilution (MILD) combustion processes.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"63 11","pages":"1353 - 1364"},"PeriodicalIF":1.3,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140053782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ti(IV) Complexes with OSSO-Type Diol Ligands as Catalysts for Synthesis of Ultrahigh-Molecular-Weight Polyethylene and Ethylene–Propylene Copolymers 具有 OSSO 型二元醇配体的 Ti(IV) 配合物作为催化剂合成超高分子量聚乙烯和乙烯-丙烯共聚物

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-02-15 DOI: 10.1134/S0965544123090050

V. A. Tuskaev, S. Ch. Gagieva, K. F. Magomedov, M. D. Evseeva, E. G. Kononova, D. A. Davydov, I. V. Karandi, V. S. Bogdanov, B. M. Bulychev

{"title":"Ti(IV) Complexes with OSSO-Type Diol Ligands as Catalysts for Synthesis of Ultrahigh-Molecular-Weight Polyethylene and Ethylene–Propylene Copolymers","authors":"V. A. Tuskaev, S. Ch. Gagieva, K. F. Magomedov, M. D. Evseeva, E. G. Kononova, D. A. Davydov, I. V. Karandi, V. S. Bogdanov, B. M. Bulychev","doi":"10.1134/S0965544123090050","DOIUrl":"10.1134/S0965544123090050","url":null,"abstract":"A series of novel complexes of titanium(IV) with OSSO-type ligands were synthesized. In the presence of Al/Mg activators such as {Et2AlCl+Bu2Mg} and {Et3Al2Cl3+Bu2Mg}, all the synthezed compounds catalyzed the polymerization of ethylene (with activity up to 2554 kgPE molM–1 h–1 atm–1). The otained ultrahigh-molecular-weight polyethylene (UHMWPE) samples had a molecular weight up to 7.6×106 Da and exhibited high melting points (up to 143°C) and high crystallinity (up to 84%). It was demonstrated that these polymers can be processed by a solvent-free method into high-strength/high-modulus oriented films (with breaking strength up to 2.2 hPa and elastic modulus up to 127.7 hPa). The synthesized compounds further manifested themselves as efficient pre-catalysts (as indicated by their catalytic activity up to 408 kgcopolymer molM–1 h–1 atm–1) for the preparation of ethylene–propylene copolymers with high propylene incorporation (up to 37%).","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"63 10","pages":"1244 - 1252"},"PeriodicalIF":1.3,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139753442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of Methyl Glycerol Ethers over a Zeolite Catalyst in a Fixed-Bed Reactor 在固定床反应器中使用沸石催化剂合成甲基甘油醚

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-02-15 DOI: 10.1134/S0965544123090086

V. O. Samoilov, Iu. I. Porukova, A. A. Kozhevnikov, V. A. Lavrentev, A. A. Porsin, M. I. Kniazeva

引用次数: 0

Hydrotreating of Lignocellulosic Bio-Oil (A Review) 木质纤维素生物油的加氢处理（综述）

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-02-03 DOI: 10.1134/S0965544123090013

G. O. Zasypalov, V. A. Klimovsky, E. S. Abramov, E. E. Brindukova, V. D. Stytsenko, A. P. Glotov

{"title":"Hydrotreating of Lignocellulosic Bio-Oil (A Review)","authors":"G. O. Zasypalov, V. A. Klimovsky, E. S. Abramov, E. E. Brindukova, V. D. Stytsenko, A. P. Glotov","doi":"10.1134/S0965544123090013","DOIUrl":"10.1134/S0965544123090013","url":null,"abstract":"This review discusses recent advances in catalytic hydrodeoxygenation of lignocellulosic biomass. Lignocellulosic biomass is the most promising plant-based raw material for the production of liquid engine fuels or individual petrochemical monomers. Among the several existing techniques for biomass processing, pyrolysis offers superior efficiency. Given that the bio-oil produced by biomass pyrolysis has unsatisfactory performance characteristics caused by the presence of oxygenates, this bio-oil cannot be used directly as a fuel. Hydrodeoxygenation using selective catalysts is able to reduce the oxygen content in bio-oil and to improve its performance characteristics. To this end, bifunctional catalysts that contain active metal sites on an acid support hold promise. Noble metals (e.g., Pt, Pd, and Ru) and/or transition metals (e.g., Ni, Co, and Mo), as well as sulfides and phosphides of transition metals, can be used as an active catalytic phase. Metal oxides (e.g., ZrO2, CeO2, Al2O3, and TiO2), carbon, zeolites (e.g., ZSM-5, Y, Beta, and SAPO-11), and mesoporous silica-based materials (e.g., SBA-15 and MCM-41) have been most often used as supports in hydrodeoxygenation catalysts. However, the implementation and upscaling of the hydrodeoxygenation of biomass pyrolytic bio-oil is limited because of the rapid deactivation of the catalyst in the presence of water, due to sintering and leaching the active phase with acidic components of bio-oil. Therefore, the development of catalysts that would provide high activity and stability under bio-oil hydrodeoxygenation conditions has become one of the most pressing issues for the petrochemical industry.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"63 10","pages":"1143 - 1169"},"PeriodicalIF":1.3,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139678828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0