Petroleum Chemistry最新文献

Study of the Salt-Adding Extractive Distillation of Cyclopentane-2,2-dimethylbutane Using Composite Extract for the Production of High-Pure Cyclopentane

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-03-12 DOI: 10.1134/S0965544124601947

Hailun Ren, Weihong Li

{"title":"Study of the Salt-Adding Extractive Distillation of Cyclopentane-2,2-dimethylbutane Using Composite Extract for the Production of High-Pure Cyclopentane","authors":"Hailun Ren, Weihong Li","doi":"10.1134/S0965544124601947","DOIUrl":"10.1134/S0965544124601947","url":null,"abstract":"Cyclopentane is an important organic raw material for the production of refrigerants and foaming agents. The relative volatilities of 2,2-dimethylbutane (DMB) and cyclopentane were determined in the presence of four extractants including dimethyl formamide (DMF, 100 wt %), N-methyl pyrrolidone (NMP, 100 wt %), DMF (80 wt %) + NMP (20 wt %), and DMF (79 wt %) + NMP (19 wt %) + sodium acetate (AcONa, 2 wt %). The results showed that the complex solvent containing AcONa provided a good separation effect, and the accuracy of the relative volatility determination was verified by the extractive distillation experiment. The process conditions for separating DMB and cyclopentane by extractive distillation with DMF (79 wt %) + NMP (19 wt %) + AcONa (2 wt %) as the extractant were systematically discussed. At the mass percentage of AcONa in DMF and NMP of ~2.0–2.5 wt %, mass ratio of solvent of about 6, the number of theoretical plates of about 30, the reflux ratio of about 3, and the solvent feed temperature of about 50°C, the composite extract (DMF (79 wt %) + NMP (19 wt %) + AcONa (2 wt %)) exhibited a better separation efficiency of the cyclopentane–DMB azeotropic system. According to the calculations of the process simulation, under the same operating conditions, the reboiler energy consumption could be reduced by 25.1% and the energy consumption for cooling could be reduced by 28.4% compared to that for the DMF solvent only.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 1","pages":"82 - 92"},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655147","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 Castor Oil-based Bifunctional Lubricant Additive

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-02-18 DOI: 10.1134/S0965544123600418

Liqin Ding, Xinyi Liu, Sifan Liu, Yuntao Xi, Xiao Guo, Hanbin Zhong

{"title":"Synthesis of Castor Oil-based Bifunctional Lubricant Additive","authors":"Liqin Ding, Xinyi Liu, Sifan Liu, Yuntao Xi, Xiao Guo, Hanbin Zhong","doi":"10.1134/S0965544123600418","DOIUrl":"10.1134/S0965544123600418","url":null,"abstract":"Poly(castor oil(CO)–styrene(St)) (PCOS) was synthesized in toluene with azodiisobutyronitrile (AIBN) as the initiator using a Schlenk technology. The structure of PCOS was characterized by the Fourier transform infrared spectroscopy (FT-IR), Proton nuclear magnetic resonance (1H NMR), and gel permeation chromatography (GPC), and the performance of the synthesized copolymer was evaluated as a solidification point depressant and a viscosity index improver. Experimental results show that when the optimum process conditions are m(CO) : m(St) = 1 : 1, and the AIBN mass fraction is 0.4% (based on the total mass of monomers) at 90°C for 6 h, the copolymer yield is 41%, the average relative molecular mass is 3.1 × 104, and the polydispersity index is 2.9. After addition of the synthesized copolymer, the solidification point of the lubricant fraction (350–395°C) can be decreased by 6–12°C, while the viscosity index can increase by 24–39. Therefore, the synthesized copolymer could be used as a lubricant additive with the double functions of reducing the solidification point and increasing the viscosity index.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 1","pages":"103 - 111"},"PeriodicalIF":1.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655260","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

Erratum to: Heterogeneous Hydroformylation Catalysts with Rhodium Nanoparticles Immobilized on Functionalized Porous Aromatic Frameworks

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-02-09 DOI: 10.1134/S0965544124090020

Wang Hanlin, M. V. Nenasheva, K. A. Cherednichenko, L. A. Kulikov, A. V. Akopyan, D. N. Gorbunov

引用次数: 0

Methods for Improving the Electromembrane Regeneration Efficiency of Industrial Alkanolamine Absorbents

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-02-09 DOI: 10.1134/S0965544124080206

E. A. Grushevenko, P. A. Safronov, V. K. Grudkovskaya, I. V. Petrova, S. D. Bazhenov

{"title":"Methods for Improving the Electromembrane Regeneration Efficiency of Industrial Alkanolamine Absorbents","authors":"E. A. Grushevenko, P. A. Safronov, V. K. Grudkovskaya, I. V. Petrova, S. D. Bazhenov","doi":"10.1134/S0965544124080206","DOIUrl":"10.1134/S0965544124080206","url":null,"abstract":"A traditional technology for removing acid gases includes absorption by aqueous solutions of alkanolamines. Despite a high degree of gas flow purification and the high productivity of this process, there is a problem of thermo-oxidative degradation of the absorption solution. Degradation products are thermally stable and tend to accumulate within the system, resulting in significant operational problems. One of the promising approaches to the regeneration of alkanolamine absorbents is combining of membrane filtration and electrodialysis. This paper presents the first study of the effect of the pore size of a membrane used for prefiltration of an alkanolamine absorbent on the efficiency of the removal of heat-stable salts (HSS) by electrodialysis. Our findings indicate that both the initial HSS content and the effectiveness of their extraction vary depending on the alkanolamine type. Such variation is determined by the different mechanisms of a resin formation in absorbent solutions depending on the alkanolamine type. It was shown that decreasing the pore size and transition from microfiltration to nanofiltration enhances the degree of HSS extraction from 55 to 65% for classical electrodialysis and up to 87% for bipolar electrodialysis. To address the issue of fouling in ion-exchange membranes, a sequential washing with acid and alkaline solutions has been proposed. Our results indicate that this method makes it possible to restore the degree of HSS extraction from absorption solutions by 95%.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 11","pages":"1327 - 1337"},"PeriodicalIF":1.3,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373198","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

Template/Al2O3 Ratio in Reaction Gels as a Tool to Control the Crystal Morphology, Crystal Dispersion, and Catalytic Performance in Hydroisomerization of n-Hexadecane over SAPO-11 Molecular Sieves

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-02-09 DOI: 10.1134/S0965544124080188

D. V. Serebrennikov, A. R. Zabirov, R. Z. Kuvatova, D. O. Bagdanova, A. I. Malunov, K. I. Dement’ev, M. R. Agliullin

{"title":"Template/Al2O3 Ratio in Reaction Gels as a Tool to Control the Crystal Morphology, Crystal Dispersion, and Catalytic Performance in Hydroisomerization of n-Hexadecane over SAPO-11 Molecular Sieves","authors":"D. V. Serebrennikov, A. R. Zabirov, R. Z. Kuvatova, D. O. Bagdanova, A. I. Malunov, K. I. Dement’ev, M. R. Agliullin","doi":"10.1134/S0965544124080188","DOIUrl":"10.1134/S0965544124080188","url":null,"abstract":"Catalytic systems based on SAPO-11 molecular sieves are known for their superior selectivity in the hydroisomerization of higher (C16+) n-paraffins. However, further improvement of SAPO-11-based catalysts is impeded by the lack of effective tools for controlling the morphology and size of silicoaluminophosphate crystals. The present study investigates the effects of the DPA/Al2O3 molar ratio in reaction gels on the nature of intermediate phases and on the physicochemical properties of SAPO-11 molecular sieves. SAPO-11 has been found to crystallize through the formation of different phases depending on the DPA/Al2O3 ratio: an AlPO4·2H2O intermediate at DPA/Al2O3 = 1.0, a mixture of AlPO4·2H2O and a layered silicoaluminophosphate at DPA/Al2O3 = 1.4, and a layered silicoaluminophosphate alone at DPA/Al2O3 = 1.8. Proper adjustment of this ratio provides an effective tool to control the crystal morphology, crystal size, and the porous structure characteristics of the SAPO-11 molecular sieves. It has been identified that, at DPA/Al2O3 = 1.0, cubic and lamellar SAPO-11 nanocrystals 200–400 nm in size are formed. These nanocrystals have the following textural properties: SBET = 286 m2/g; Vmicro = 0.06 cm3/g; and Vmeso = 0.21 m3/g. Furthermore, the effects of the morphology and size of SAPO-11 molecular sieve crystals on their catalytic performance in the hydroisomerization of n-hexadecane have been demonstrated. Promising catalytic systems based on SAPO-11 nanocrystals have been proposed for the hydroisomerization of C16+ n-paraffins.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 11","pages":"1276 - 1285"},"PeriodicalIF":1.3,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373380","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

Modeling of a Single-Tube Steam Methane Reformer: Choice Between Flue Gas Heating and Infrared Burner

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-02-09 DOI: 10.1134/S0965544124080127

A. B. Shigarov, D. I. Potemkin

{"title":"Modeling of a Single-Tube Steam Methane Reformer: Choice Between Flue Gas Heating and Infrared Burner","authors":"A. B. Shigarov, D. I. Potemkin","doi":"10.1134/S0965544124080127","DOIUrl":"10.1134/S0965544124080127","url":null,"abstract":"The article provides a comparative assessment of two design cases of heat input for a compact single-tube steam methane reformer operating at 10 bar and a feed flow rate of 1–3 Nm3/h, filled with a granulated nickel catalyst, and equipped with a 5–15 kW propane–butane burner. In the first design case, the catalyst-filled tube was heated with a flue gas as it was injected from the flame burner (at an excess air ratio of 2.3) through an annular channel that enclosed the tube. In the second design case, the heat was provided by a cylindrical IR burner panel (at an excess air ratio of 1.05) that enclosed the tube. Using mathematical modeling, the performance of both reformer cases was compared, with all other parameters being equal. The IR-burner-based reformer exceeded its flue-gas-heated counterpart in terms of methane conversion, heat recovery efficiency (about twofold for both parameters), the percentage of radiant heat transfer (by a factor of about 2.3), and fuel enthalpy increase (6–7% higher in the second case). When the operating load was tripled, the reformer integrated with the IR burner exhibited a lesser performance drop (regarding all the parameters mentioned above) than the conventionally heated reformer (in particular, the methane conversion declined by 8% in the second design case and by 18% in the first). The parametric calculations based on the permeable burner panel model showed that a Peclet number greater than five (Pe > 5) was able to prevent the panel inlet surface from heating to an extent that could otherwise cause emergency autoignition of the fuel–air mixture at the panel inlet.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 11","pages":"1286 - 1299"},"PeriodicalIF":1.3,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373200","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

Hydrogen Production by Thermocatalytic Decomposition of Methane: Modern Achievements (A Review)

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-02-03 DOI: 10.1134/S0965544124080176

I. V. Kudinov, E. A. Kosareva, V. D. Dolgikh, N. A. Vinogradov, A. A. Pimenov

引用次数: 0

Heterogeneous Hydroformylation Catalysts with Rhodium Nanoparticles Immobilized on Functionalized Porous Aromatic Frameworks

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-01-28 DOI: 10.1134/S0965544124080164

Wang Hanlin, M. V. Nenasheva, K. A. Cherednichenko, L. A. Kulikov, A. V. Akopyan, D. N. Gorbunov

{"title":"Heterogeneous Hydroformylation Catalysts with Rhodium Nanoparticles Immobilized on Functionalized Porous Aromatic Frameworks","authors":"Wang Hanlin, M. V. Nenasheva, K. A. Cherednichenko, L. A. Kulikov, A. V. Akopyan, D. N. Gorbunov","doi":"10.1134/S0965544124080164","DOIUrl":"10.1134/S0965544124080164","url":null,"abstract":"The study investigates the effects of various functional groups contained in porous aromatic frameworks (PAFs) on the properties and performance of a series of rhodium catalysts developed for hydroformylation. Analytical methods such as TEM, FTIR spectroscopy, elemental analysis, XRD, and low-temperature nitrogen adsorption–desorption were used to characterize the catalysts before and after running. The catalysts based on PAFs with sulfo groups (PAF–SO3H) exceeded those based on PAFs with imidazole substituents (PAF–Im+Cl–) in terms of specific activity in the hydroformylation of 1-hexene. Both catalyst types exhibited high stability over five running cycles. An extra wash with sulfuric acid enhanced the specific activity of the PAF–SO3H catalysts, although their metal retention capacity declined; the washing had no adverse effect on the stability of the PAF–Im+Cl– catalysts. Rhodium in the catalysts was present as Rh0 (nanoparticles) and Rh3+, and the reduced Rh was found to most likely act as a precursor of the catalytically active hydridocarbonyl complexes.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 10","pages":"1213 - 1223"},"PeriodicalIF":1.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109462","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

Erratum to: Diagenesis Affections on the Sandstone of Zubair Formation in Luhais Oil Field Southern Iraq

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-01-28 DOI: 10.1134/S0965544124090019

Ihab S. Hasan, Thamer A. Al Shimary

引用次数: 0

In Situ Synthesis of Unsupported Nickel Phosphides and Their Activity in 1,4-Dichlorobenzene Hydrodechlorination

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2025-01-28 DOI: 10.1134/S0965544124080103

E. G. Dzhabarov, V. D. Kuz’min, N. N. Petrukhina, E. M. Zakharyan

引用次数: 0