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Acidity Evaluation of Industrially Dealuminated Y Zeolite via Methylcyclohexane Transformation

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China Petroleum Processing & Petrochemical Technology 2021年第3期23卷 50-57页

作者： Hou Kaige Qin Bo Han Junjie du yanze Ma Jinghong Li Ruifeng College of Chemistry and Chemical Engineering Taiyuan University of TechnologyTaiyuan 030024 SINOPEC Dalian Research Institute of Petroleum and Petrochemicals Dalian

The catalytic transformation of methylcyclohexane as an accepted probe reaction to evaluate zeolitic acidity(concentration,strength,and accessibility)is employed to study the acidity and the reactivity of three commercial dealuminated Y zeolites(DAY)with different Si/Al ratios and meso/microporosities,with their properties analyzed by N_(2) adsorption/desorption,pyridine-IR,and hydroxyl-IR spectroscopy *** global activity(conversion)is largely dependent on the concentration of the acid sites,and the activity of the protonic sites in terms of turnover frequency(TOF)reflects the accessibility of acid *** products of aromatics and isomers,and the yield of cracking products increase with the increase of concentration of strong protonic sites in zeolite ***,the decrease of aromatics with the reduction of the concentration of acid sites and the diffusion length within DAY zeolites are observed due to the decrease of the secondary *** the same reason,it results in the increasing of C_(7)products and alkenes/alkanes ratios in the cracking *** high i-C_(4)product selectivity is a unique reflection of the high percentage of very strong acid sites,which is characterized by the hydroxyl-IR band at 3600 cm^(-1).

关键词： methylcyclohexane catalytic transformation industrially modified Y zeolite zeolitic acidity strong protonic sites spectroscopic technology

Enhanced bimetallic CuCo nanoparticles on nitrogen-doped carbon for selective hydrogenation of furfural to furfuryl alcohol through strong electronic interactions

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Chinese Journal of Chemical Engineering 2024年第10期74卷 165-174页

作者： Antai Kang Jiangtao Li Yubin Li Min Cao Li Qiu Bo Qin yanze du Feng Yu Sha Li Ruifeng Li Xiaoliang Yan College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China SINOPEC Dalian Research Institute of Petroleum and Petrochemicals Co. Ltd.Dalian 116045China College of Textile Engineering Taiyuan University of TechnologyTaiyuan 030024China State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024China

Bimetallic CuCo catalysts with different Cu to Co ratios on N-doped porous carbon materials(N-C)were achieved using impregnation method and applied in the hydrogenation of furfural(FAL)to furfuryl alcohol(FOL).The high hydrogenation activity of FAL over Cu_(1)Co_(1)/N-C was originated from the synergistic interactions of Cu and Co species,where Co^(0)and Cu^(0)simultaneously adsorb and activate H_(2),and Cu^(+) served as Lewis acid sites to activate C]***,electrons transfer from Cu to Co promoted the formation of Cu^(+).In situ Fourier transform infrared spectroscopy analysis indicated that Cu_(1)Co_(1)/N-C adsorbed FAL with a tilted η^(1)-(O)*** superior Cu_(1)Co_(1)/N-C showed excellent adsorbed ability towards H_(2) and FAL,but weak adsorption for ***,Cu_(1)Co_(1)/N-C possessed 93.1%FAL conversion and 99.0% FOL selectivity after 5 h reaction,which also exhibited satisfactory reusability in FAL hydrogenation for five cycles.

关键词： Electronic interactions Furfural Selective hydrogenation Furfuryl alcohol Adsorption

Polycrystalline ZSM-5 Aggregates Induced by Seed and Catalytic Performance in Methanol to Hydrocarbon

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无机材料学报 2024年第8期39卷 945-954,I0010-I0013页

作者： WANG Xuchang JIAO Chuyu JI Zhuo JIAO Qirui QIN Bo du yanze ZHENG Jiajun LI Ruifeng Key Laboratory of Coal Science and Technology MOE Research Centre of Energy Chemical&Catalytic TechnologyTaiyuan University of TechnologyTaiyuan 030024China SINOPEC Dalian Research Institute of Petroleum and Petrochemicals Co. Ltd.SINOPECDalian 116045China

Synthesis of ZSM-5 zeolite typically utilizes small molecule polyamines or quaternary ammonium salts as organic structure guiding agent(OSDA).By contrast,the OSDA-free hydrothermal synthesis system eliminates the use of organic templates and the subsequent calcination *** not only reduces the cost of synthesis,but also prevents environmental pollution from the combustion of organic templates,representing an eco-friendly *** this,literature suggests that even so-called template-free synthesis systems often involve trace amount of organic substances like *** the present work,a calcined commercial ZSM-5 zeolite was served as seed,with sodium aluminate as aluminum source and silica sol as silicon source,ensuring an entirely template-free synthesis *** ZSM-5 aggregates consisted of rod-like nanocrystals were successfully prepared in the completely OSDA-free *** of the Si/Al ratio in ZSM-5 seed,dosage and crystallization conditions such as crystallization temperature and crystallization time on ZSM-5 synthesis were *** results show that a highly crystallinity ZSM-5 aggregate consisting of primary nano-sized crystals less than 100 nm is produced from a gel precursor with 5.6%(in mass)seed after hydrothermal treatment for 48 ***,the Si/Al ratio in ZSM-5 seed has little effect on the topological structure and pore structure of the synthesized ***,the seeds with a low Si/Al ratio facilitate faster crystallization of zeolite and enhance the acidity,especially the strong acid centers,of the *** catalytic performance of the synthesized polycrystalline ZSM-5 was evaluated during dehydration of methanol and compared with a commercial reference *** results exhibit that as compared with the reference catalyst,the fabricated sample has a longer catalytic lifetime(16 h vs 8 h)attributed to its hierarchical pores derived from the loosely packed primary ***

关键词： ZSM-5 polycrystalline aggregate crystal seed structure guiding agent

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沸石分子筛催化剂的“限域”效应

中国科学：化学 2021年第2期51卷 87-96页

作者：方向晨杜艳泽张通中国石油化工集团有限公司大连石油化工研究院大连116045

沸石分子筛催化剂因其独特的酸性、规则的孔道结构和良好的水热及化学稳定性被广泛应用于石油化工、煤化工和精细化工等重要领域.沸石分子筛活性位点的数目和分布,以及孔结构效应是沸石分子筛催化科学研究中最根本的问题,直接影响催化... 详细信息

沸石分子筛催化剂因其独特的酸性、规则的孔道结构和良好的水热及化学稳定性被广泛应用于石油化工、煤化工和精细化工等重要领域.沸石分子筛活性位点的数目和分布,以及孔结构效应是沸石分子筛催化科学研究中最根本的问题,直接影响催化反应历程和反应结果.几十年来,沸石分子筛催化研究多集中在对活性位点的基本认识和合成设计,而忽视了活性位点、反应分子和沸石分子筛孔道微环境之间的相互作用.受益于先进的化学分析表征技术和化学理论计算科学的发展,沸石分子筛催化剂孔道内的微环境研究引起了越来越多研究人员的重视.通过对相关文献的分析整理,本文从沸石分子筛结构"限域"理论的发展历程,对分子扩散、吸附和催化过程的影响及其应用拓展等几个方面讨论了沸石分子筛催化剂中的"限域"效应.

关键词：沸石分子筛分子筛催化剂酸活性限域效应

基于无网格方法的四叶草型催化剂体相温度分布数值模拟

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石油炼制与化工 2016年第10期47卷 51-55页

作者：王阔赵波秦波杜艳泽中国石化抚顺石油化工研究院辽宁抚顺113001 辽宁石油化工大学理学院

以四叶草型及圆柱型加氢裂化催化剂三维体相环境为计算实体,以模拟工业运行温度的函数作为边界条件,采用无网格数值方法求解傅里叶传热方程,并根据计算结果分析加氢裂化反应过程中工况条件及催化剂尺寸对于催化剂内部温度分布的影响。... 详细信息

以四叶草型及圆柱型加氢裂化催化剂三维体相环境为计算实体,以模拟工业运行温度的函数作为边界条件,采用无网格数值方法求解傅里叶传热方程,并根据计算结果分析加氢裂化反应过程中工况条件及催化剂尺寸对于催化剂内部温度分布的影响。结果表明:在加氢裂化反应中,圆柱型及四叶草型催化剂颗粒内部的最高温度及平均温度均随反应放热量、空速、原料密度、催化剂半径及催化剂长度的增加而增大,其中反应放热量和催化剂半径对催化剂内部温度的影响更显著;即使在理想的宏观等温反应条件下,两种催化剂内部仍然是非等温区域;在工况条件及催化剂半径和长度均相同时,四叶草型催化剂内部的最高温度、平均温度均低于圆柱型催化剂,具有比圆柱型催化剂更均匀的温度分布。

关键词：加氢裂化催化剂传热无网格法数值模拟温度分布

核壳复合材料Y-SiO_2与ZSM-5-SiO_2的工业放大制备及其表征

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石油化工 2015年第7期44卷 872-876页

作者：任靖秦波杜艳泽曹光伟中国石化催化剂有限公司抚顺分公司辽宁抚顺113122 中国石化抚顺石油化工研究院辽宁抚顺113100 中国石化催化剂有限公司北京100029

考察了采用溶胶-凝胶法制备核壳复合材料Y-SiO2和ZSM-5-SiO2的工业放大过程,并采用XRD、N2吸附-脱附、SEM和TEM等方法对复合材料进行了表征。SEM和TEM表征结果显示,制备的核壳复合材料具有明显的核壳结构特征,且壳层结构连接紧密。试验... 详细信息

考察了采用溶胶-凝胶法制备核壳复合材料Y-SiO2和ZSM-5-SiO2的工业放大过程,并采用XRD、N2吸附-脱附、SEM和TEM等方法对复合材料进行了表征。SEM和TEM表征结果显示,制备的核壳复合材料具有明显的核壳结构特征,且壳层结构连接紧密。试验结果表明,在核壳复合材料的放大过程中,采用机械搅拌的混合方式可实现核壳复合材料的工业制备,搅拌转速对其物化性质没有影响。制备的两种核壳复合材料的BET比表面积、外比表面积及孔体积均达到指标要求,两个批次的Y-SiO2试样的BET比表面积分别为866 m2/g和872 m2/g,外比表面积分别为262 m2/g和277 m2/g,孔体积均大于0.40m L/g;两个批次的ZSM-5-SiO2试样的BET比表面积分别为426 m2/g和418 m2/g,外比表面积分别为222 m2/g和217 m2/g,孔体积均大于0.20 m L/g。两种核壳复合材料的工业放大试验过程的重复性好,可满足大规模工业化生产的需要。

关键词：核壳复合材料 Y-SiO2 ZSM-5-SiO2 工业生产表征

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冠心病介入术后病人心脏康复研究进展

循证护理 2023年第17期9卷 3094-3099页

作者：杜炎泽中国人民解放军海军军医大学第一附属医院上海200082

从冠心病介入术后心脏康复的概念、心脏康复现状、影响因素、心脏康复分期和内容、心脏康复的护理等方面综述冠心病介入术后心脏康复研究进展,旨在提高医护人员对心脏康复的认识和病人的依从性,为临床开展心脏康复提供理论依据。

关键词：冠心病介入手术护理康复影响因素综述

Bentall术后并发消化道反复出血患者1例护理

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上海护理 2022年第12期22卷 74-76页

作者：杜炎泽海军军医大学第一附属医院上海200433

升主动脉瘤(ascending aorta aneurysm)是由主动脉壁中层囊性变性、硬化等原因所致的主动脉部分异常扩张、变形,呈瘤样突出,超过性别、年龄和体质量预期直径的50%,常伴有主动脉瓣反流[1-2]。患者一旦发病,病情往往较重且死亡率较高。Ben... 详细信息

升主动脉瘤(ascending aorta aneurysm)是由主动脉壁中层囊性变性、硬化等原因所致的主动脉部分异常扩张、变形,呈瘤样突出,超过性别、年龄和体质量预期直径的50%,常伴有主动脉瓣反流[1-2]。患者一旦发病,病情往往较重且死亡率较高。Bentall手术是应用带瓣人工血管置换病变的升主动脉及主动脉瓣,是治疗升主动脉瘤合并主动脉瓣关闭不全的首选方法,可有效改善患者的心功能指标,提高生存质量[3-4]。

关键词：升主动脉瘤 Bentall手术消化道出血护理

FC-52化工型加氢裂化催化剂的研制及分析

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炼油技术与工程 2018年第7期48卷 47-50页

作者：秦波柳伟杜艳泽高杭中国石油化工股份有限公司大连石油化工研究院辽宁省大连市116045

针对当前炼化企业对化工型加氢裂化催化剂的需求,中国石油化工股份有限公司大连石油化工研究院开发研制了FC-52化工型加氢裂化催化剂。该催化剂以富含介孔结构和酸性位可接近性好的ASSY分子筛为主要裂化组分,以金属钼-镍为加氢组分,采... 详细信息

针对当前炼化企业对化工型加氢裂化催化剂的需求,中国石油化工股份有限公司大连石油化工研究院开发研制了FC-52化工型加氢裂化催化剂。该催化剂以富含介孔结构和酸性位可接近性好的ASSY分子筛为主要裂化组分,以金属钼-镍为加氢组分,采用混捏法技术制备而成。与USSY分子筛相比,ASSY分子筛介孔比表面积提高了150%,介孔孔容提高了60%,大幅提高了分子筛的扩散性能和酸性位可接近性,使得FC-52加氢裂化催化剂具有良好的加氢开环性能和加氢裂化活性。以伊朗VGO为原料,与同类型的加氢裂化催化剂相比,FC-52催化剂的重石脑油选择性提高了0.9~1.5百分点;加氢裂化尾油在收率相同时,其BMCI值降低1.0~1.3单位。FC-52催化剂制备过程简单,稳定性好,产品适应性强,具有广阔的应用前景。

关键词：加氢裂化催化剂 ASSY分子筛选择性加氢裂化性能