Applied Petrochemical Research最新文献_第5页

Computation of effectiveness factor for methanol steam reforming over Cu/ZnO/Al2O3 catalyst pellet Cu/ZnO/Al2O3催化剂球团甲醇蒸汽重整效能因子的计算

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Applied Petrochemical Research Pub Date : 2020-05-01 DOI: 10.1007/s13203-020-00244-w

Abayomi O. Olatunde, Olaosebikan A. Olafadehan, Mohammed A. Usman

{"title":"Computation of effectiveness factor for methanol steam reforming over Cu/ZnO/Al2O3 catalyst pellet","authors":"Abayomi O. Olatunde, Olaosebikan A. Olafadehan, Mohammed A. Usman","doi":"10.1007/s13203-020-00244-w","DOIUrl":"https://doi.org/10.1007/s13203-020-00244-w","url":null,"abstract":"A mathematical model was developed for a diffusion–reaction process in a spherical catalyst pellet contained in a heterogeneous packed bed reactor. The model developed was solved to predict the effectiveness factor and also to perform sensitivity analysis for steam reforming of methanol on Cu/ZnO/Al2O3 catalyst a source of hydrogen fuel. The method of orthogonal collocation was used to solve the resulting differential equation. At temperature below 473?K the effect on intra-particle diffusion limitation is reduced to the minimum indicated by the effectiveness factor being almost equal to one but as the temperature increases above 473?K there is considerable increase in the diffusion limitation effect. The effects of thermal conductivity, diffusion coefficient, catalyst size and surface temperature on effectiveness factor for the reaction process were also considered. Result indicates that catalyst size of (1.623,, times ,,10^{ - 4})?m eliminates the effect of intra-particle diffusion resistance in the pellet. The variation of effectiveness factor with Thiele modulus, showing the asymptotic values, using power law and Langmuir–Hinshelwood–Hougen–Watson (LHHW) kinetics, was predicted. The two reaction kinetics had almost the same magnitude of effectiveness factor at different Thiele modulus which indicates that they can adequately predict the reaction process.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"10 1","pages":"35 - 47"},"PeriodicalIF":0.125,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-020-00244-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4047503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Isothermal study of asphaltene adsorption over 4A, 13X, ZSM-5, clinoptilolite zeolites, and phoslock 沥青质在4A、13X、ZSM-5、斜沸石、沸石和光锁上吸附的等温研究

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Applied Petrochemical Research Pub Date : 2020-04-28 DOI: 10.1007/s13203-020-00243-x

Maryam Baninaam, Seyed Ali Hosseini, Ahmad Reza Abbasian

{"title":"Isothermal study of asphaltene adsorption over 4A, 13X, ZSM-5, clinoptilolite zeolites, and phoslock","authors":"Maryam Baninaam, Seyed Ali Hosseini, Ahmad Reza Abbasian","doi":"10.1007/s13203-020-00243-x","DOIUrl":"https://doi.org/10.1007/s13203-020-00243-x","url":null,"abstract":"The paper reports the adsorption studies of asphaltenes of Iran’s heavy crude oil on some natural and synthetic alumino-silicates. Asphaltenes were precipitated using n-heptane. Toluene was used as a precipitating solvent of asphaltenes and several zeolites including 4A, ZSM-5, Clinoptilolite, and La-modified bentonite (Phoslock) as adsorbents. FTIR analysis indicated the asphaltenes which comprise a complex of aromatic, aliphatic, and polar compounds. The pore size and outer surface area of the adsorbents were determined by BET method and the following order was found between outer surface areas: ZSM-5 (238.27?m2?g?1)?>?Clinoptilolite (28.75?m2?g?1)?>?Phoslocks (27.92?m2?g?1)?>?zeolite 4A (21.11?m2?g?1)?>?Zeolite 13X (317.24?m2?g?1). Besides, the adsorption isotherms were investigated with the conventional isotherm models and it was indicated that the Langmuir isotherm fitted the experimental data. Zeolite 13X with the highest specific surface area and pore size exhibited the maximum adsorption capacity, indicating that there is a direct relationship between surface area and adsorption capacity. However, it seems that the pore size effect is more prominent because of the large size of asphaltene’s molecules.\u0000","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"10 1","pages":"49 - 54"},"PeriodicalIF":0.125,"publicationDate":"2020-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-020-00243-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5070670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Effect of the experimental conditions on BTX formation from hydrotreated light cycle oil 实验条件对加氢轻循环油生成BTX的影响

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Applied Petrochemical Research Pub Date : 2020-03-25 DOI: 10.1007/s13203-020-00242-y

Georgina C. Laredo, Patricia Pérez-Romo, Ricardo Agueda-Rangel, Alfonso García-López

{"title":"Effect of the experimental conditions on BTX formation from hydrotreated light cycle oil","authors":"Georgina C. Laredo, Patricia Pérez-Romo, Ricardo Agueda-Rangel, Alfonso García-López","doi":"10.1007/s13203-020-00242-y","DOIUrl":"https://doi.org/10.1007/s13203-020-00242-y","url":null,"abstract":"The study of a light cycle oil (LCO) upgrading alternative involving hydrotreating and hydrocracking/transalkylation procedures for obtaining a benzene, toluene and xylene (BTX) enriched fraction is presented. The research work was focused on the effect of the experimental conditions on the hydrocracking of an hydrotreated light cycle oil (HDT LCO) in order to produce the highest amounts of BTX, when the catalysts consisted of a mixture (50/50 in weight) of nickel–molybdenum on alumina (NiMo/Al2O3) and ZSM-5 materials (NiMo/ZSM-5 (50)). It was found that 7.4?MPa, up to 375?°C, LHSV of 1.2?h?1 and a H2/Oil value of 442 m3/m3 were the optimal experimental conditions for producing an enriched BTX fraction (31%). In order to facilitate the analysis, the study was carried out considering four types of hydrocarbons as lumps for the feed and HCK products: light hydrocarbons (LHC) composed by C4–C7 non-aromatic compounds, BTX, middle hydrocarbons (MHC) consisting of C7–C10 paraffins and isoparaffins, alkylbenzenes, tetralin and naphthalene derivatives and a small amount of high molecular weight hydrocarbons (HHC). Based on this description, HDT LCO used as feedstock for the hydrocracking (HCK) procedure, presents a 99% of a MHC fraction. The HCK conversion, BTX selectivity and yields were obtained from the chromatographic analysis of the products. A simple kinetic model considering only the MHC conversion was carried out. The obtained activation energy confirmed the endothermic nature of the HCK process. The activity decay of the catalytic mixture was also studied by varying the time on stream.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"10 1","pages":"21 - 34"},"PeriodicalIF":0.125,"publicationDate":"2020-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-020-00242-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5355858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Cooperative effect of cobalt and zeolite in controlling activity and stability of a catalytic Fischer–Tropsch process 钴和沸石在控制催化费托过程活性和稳定性中的协同作用

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Applied Petrochemical Research Pub Date : 2020-02-20 DOI: 10.1007/s13203-020-00240-0

Liliya V. Sineva, Ekaterina Yu. Asalieva, Ekaterina V. Kulchakovskaya, Kirill O. Gryaznov, Vladimir Z. Mordkovich

引用次数: 1

Adsorptive desulfurization of diesel using activated sewage sludge: kinetics, equilibrium and thermodynamics studies 活性污泥对柴油的吸附脱硫:动力学、平衡和热力学研究

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Applied Petrochemical Research Pub Date : 2019-12-07 DOI: 10.1007/s13203-019-00239-2

David Stan Aribike, Mohammed Awwalu Usman, Mojirade M. Oloruntoba

{"title":"Adsorptive desulfurization of diesel using activated sewage sludge: kinetics, equilibrium and thermodynamics studies","authors":"David Stan Aribike, Mohammed Awwalu Usman, Mojirade M. Oloruntoba","doi":"10.1007/s13203-019-00239-2","DOIUrl":"https://doi.org/10.1007/s13203-019-00239-2","url":null,"abstract":"Combustion of fossil fuels gives rise to sulfur oxides, which are harmful to the environment. Adsorptive desulfurization (ADS) of diesel was conducted using sewage sludge activated with H2O2 as the oxidizing agent. A full 22 central composite response surface design was employed to determine optimum conditions for the production of activated sewage sludge (ASS). The adsorbent (ASS) was characterized using SEM, EDX and FTIR and the results of the analysis showed that it has the capacity to desulfurize diesel significantly. The ASS was subsequently used to conduct batch ADS of diesel with a view to investigate the kinetics, equilibrium and thermodynamics of the process. The optimum conditions established for the production of ASS using H2O2 as the oxidizing agent were: temperature 400?°C and holding time 60?min. The Elovich model gave the best fit to the kinetic data of the ADS of diesel using ASS, while the equilibrium study showed that the Freundlich isotherm fitted the data at 35?°C better than Temkin and Langmuir isotherms. The positive values of the free energy and enthalpy changes revealed that the process was non-spontaneous and endothermic, respectively, while the negative entropy change is evidence of decrease in randomness of the adsorbed species. 33% desulfurization was achieved in 100?min during ADS of diesel showing that the adsorbent developed by activating SS with H2O2 was very good and effective. Thus, ASS can be used to gain more insight into kinetics, equilibrium and thermodynamics of the ADS of middle-distillate petroleum fractions.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"10 1","pages":"1 - 12"},"PeriodicalIF":0.125,"publicationDate":"2019-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-019-00239-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4289477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

DRIFTS study of Fe promoter effect on Rh/Al2O3 catalyst for C2 oxygenates synthesis from syngas 合成气合成C2氧合物的Rh/Al2O3催化剂上Fe促进剂效应的DRIFTS研究

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Applied Petrochemical Research Pub Date : 2019-11-11 DOI: 10.1007/s13203-019-00238-3

Fang Li, Weixing Qian

引用次数: 2

Hydrocracking process of fuel oil using halloysite modified by different methods 用不同方法改性的高岭土加氢裂化燃料油

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Applied Petrochemical Research Pub Date : 2019-11-05 DOI: 10.1007/s13203-019-00234-7

Aisha Hasanova, Arzu Alizade, Rana Ahmadova, Gulbaniz Mukhtarova, Vagif Abbasov

引用次数: 6

Effect of the catalytic system and operating conditions on BTX formation using tetralin as a model molecule 以四氢化萘为模型分子的催化体系和操作条件对BTX生成的影响

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Applied Petrochemical Research Pub Date : 2019-11-01 DOI: 10.1007/s13203-019-00237-4

Georgina C. Laredo, Patricia Pérez-Romo, Pedro M. Vega-Merino, Elva Arzate-Barbosa, Alfonso García-López, Ricardo Agueda-Rangel, Victor H. Martínez-Moreno

{"title":"Effect of the catalytic system and operating conditions on BTX formation using tetralin as a model molecule","authors":"Georgina C. Laredo, Patricia Pérez-Romo, Pedro M. Vega-Merino, Elva Arzate-Barbosa, Alfonso García-López, Ricardo Agueda-Rangel, Victor H. Martínez-Moreno","doi":"10.1007/s13203-019-00237-4","DOIUrl":"https://doi.org/10.1007/s13203-019-00237-4","url":null,"abstract":"Light cycle oil (LCO) is an inexpensive feedstock for the production of high-added-commercial-value-mono-aromatic compounds such as benzene, toluene and xylenes (BTX). To extend the knowledge on the processing of LCO for BTX production, the hydrocracking reaction was studied using a commercial NiMo/Al2O3 catalyst, ZSM-5 zeolite and their mechanical mixtures (20/80, 30/70 and 50/50) for processing tetralin as model feedstock in a bench-scale-trickle-bed reactor at 450–500?°C, 3.9–5.9?MPa, 1.3 1/h and H2/feed volume ratio of 168–267?m3/m3. Accessible, well-dispersed and strong Br?nsted acid sites eased the hydrocracking of tetralin to BTX and the metallic hydrogenation functions from nickel–molybdenum catalysts were also required to minimize deactivation. To achieve suitable tetralin conversions (86–95?wt%), high BTX selectivity in the liquid phase (44–70?wt%) and suitable catalytic activities for coke precursor hydrogenation (to reduce deactivation), NiMo/Al2O3//ZSM-5 mixtures (50–80 ZSM-5) were employed, which probed to be effective.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"9 3-4","pages":"185 - 198"},"PeriodicalIF":0.125,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-019-00237-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4050455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Synthesis of phosphates for liquefied petroleum gas (LPG) fracturing fluid 液化石油气压裂液用磷酸盐的合成

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Applied Petrochemical Research Pub Date : 2019-10-29 DOI: 10.1007/s13203-019-00236-5

Pengfei Chen, Honggang Chang, Gang Xiong, Yan Zhang, Xueqin Zheng

引用次数: 1

SEM morphological analysis of irradiated polystyrene film doped by a Schiff base containing a 1,2,4-triazole ring system 含1,2,4-三唑环的席夫碱掺杂聚苯乙烯辐照膜的SEM形貌分析

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Applied Petrochemical Research Pub Date : 2019-09-30 DOI: 10.1007/s13203-019-00235-6

Ahmed A. Ahmed, Dina S. Ahmed, Gamal A. El-Hiti, Mohammad Hayal Alotaibi, Hassan Hashim, Emad Yousif

引用次数: 23