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Low-temperature NH_(3) abatement via selective oxidation over a supported copper catalyst with high Cu^(+) abundance

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Journal of Environmental Sciences 2024年第9期143卷 12-22页

作者： Zhiming Yang Lin Peng Leneng Yang Mingli Fu Daiqi Ye peirong Chen Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control National Engineering Laboratory for VOCs Pollution Control Technology and EquipmentSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Guangdong Chengyi Environmental Technology Corp. Shaoguan 512158China

Selective catalytic NH_(3)-to-N_(2) oxidation(NH_(3)-SCO)is highly promising for abating NH_(3) emissions slipped from stationary flue gas after-treatment *** practical application,however,is limited by the non-availability of low-cost catalysts with high activity and N_(2) ***,using defect-rich nitrogen-doped carbon nanotubes(NCNT-AW)as the support,we developed a highly active and durable copper-based NH_(3)-SCO catalyst with a high abundance of cuprous(Cu^(+))*** obtained Cu/NCNT-AW catalyst demonstrated outstanding activity with a T_(50)(*** temperature to reach 50% NH_(3) conversion)of 174℃ in the NH_(3)-SCO reaction,which outperformed not only the Cu catalyst supported on N-free O-functionalized CNTs(OCNTs)or NCNT with less surface defects,but also those most active Cu catalysts in open *** kinetics measurements and temperature-programmed surface reactions using NH_(3)as a probe molecule revealed that the NH_(3)-SCO reaction on Cu/NCNT-AW follows an internal selective catalytic reaction(i-SCR)route involving nitric oxide(NO)as a key *** to mechanistic investigations by X-ray photoelectron spectroscopy,Raman spectroscopy,and X-ray absorption spectroscopy,the superior NH_(3)-SCO performance of Cu/NCNT-AW originated from a synergy of surface defects and ***,surface defects promoted the anchoring of Cu O nanoparticles on N-containing sites and,thereby,enabled efficient electron transfer from N to Cu O,increasing significantly the fraction of SCR-active Cu^(+)sites in the *** study puts forward a new idea for manipulating and utilizing the interplay of defects and N-dopants on carbon surfaces to fabricate Cu^(+)-rich Cu catalysts for efficient abatement of slip NH_(3)emissions via selective oxidation.

关键词： NH_(3)-SCO XANES Localized etching N-doping N_(2) selectivity i-SCR

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A flexible multiscale algorithm based on an improved smoothed particle hydrodynamics method for complex viscoelastic flows

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Applied Mathematics and Mechanics(English Edition) 2024年第8期45卷 1387-1402页

作者： Jinlian REN peirong LU Tao JIANG Jianfeng LIU Weigang LU College of Mathematical Science Yangzhou UniversityYangzhou 225002Jiangsu ProvinceChina College of Hydraulic Science and Engineering Yangzhou UniversityYangzhou 225002Jiangsu ProvinceChina

Viscoelastic flows play an important role in numerous engineering fields,and the multiscale algorithms for simulating viscoelastic flows have received significant attention in order to deepen our understanding of the nonlinear dynamic behaviors of viscoelastic ***,traditional grid-based multiscale methods are confined to simple viscoelastic flows with short relaxation time,and there is a lack of uniform multiscale scheme available for coupling different solvers in the simulations of viscoelastic *** this paper,a universal multiscale method coupling an improved smoothed particle hydrodynamics(SPH)and multiscale universal interface(MUI)library is presented for viscoelastic *** proposed multiscale method builds on an improved SPH method and leverages the MUI library to facilitate the exchange of information among different solvers in the overlapping *** test the capability and flexibility of the presented multiscale method to deal with complex viscoelastic flows by solving different multiscale problems of viscoelastic *** the first example,the simulation of a viscoelastic Poiseuille flow is carried out by two coupled improved SPH methods with different spatial *** effects of exchanging different physical quantities on the numerical results in both the upper and lower domains are also investigated as well as the absolute errors in the overlapping *** the second example,the complex Wannier flow with different Weissenberg numbers is further simulated by two improved SPH methods and coupling the improved SPH method and the dissipative particle dynamics(DPD)*** numerical results show that the physical quantities for viscoelastic flows obtained by the presented multiscale method are in consistence with those obtained by a single solver in the overlapping ***,transferring different physical quantities has an important effect on the numerical results.

关键词： multiscale method improved smoothed particle hydrodynamics(SPH) dissipative particle dynamics(DPD) multiscale universal interface(MUI) complex viscoelastic flow

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沉积物和原油中常见含氧化合物的分离分析

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分析化学 2001年第3期29卷 276-279页

作者：汪双清王培荣江汉石油学院分析测试研究中心!荆州434102 石油大学地球科学系!北京102200

将沉积物抽提物和原油中复杂的非烃组成分离为酸性、中性Ⅰ和中性Ⅱ 3个馏分。各馏分经GC/MS分析证实羧酸和极性较大的多元醇和酮进入酸性馏分 ,一元酮、酯和直链一元醇进入中性馏分Ⅰ ,而甾醇类化合物进入中性馏分Ⅱ。各类化合物分段清... 详细信息

将沉积物抽提物和原油中复杂的非烃组成分离为酸性、中性Ⅰ和中性Ⅱ 3个馏分。各馏分经GC/MS分析证实羧酸和极性较大的多元醇和酮进入酸性馏分 ,一元酮、酯和直链一元醇进入中性馏分Ⅰ ,而甾醇类化合物进入中性馏分Ⅱ。各类化合物分段清晰 ,没有同一化合物在不同馏分中出现的现象 ,且分离过程中各化合物的比例基本保持不变。本文选用地质体中迄今未见析出的二十二烯酸 ,5α(H) 雄甾 17 酮和 5α(H) 雄甾 3β 醇分别作为各馏分的内标化合物 ,定量效果良好 ,并首次为甾醇类化合物找到了较理想的内标物。本方法经近百个样品的分离分析证实效果良好。

关键词：非烃含氧化合物

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Editing of eIF(iso)4E.c confers resistance against Turnip mosaic virus in Brassica rapa

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Horticultural Plant Journal 2024年第4期10卷 1020-1034页

作者： Yujia Liu Xiaoyun Xin peirong Li Weihong wang Yangjun Yu Xiuyun Zhao Deshuang Zhang Jiao wang Fenglan Zhang Shujiang Zhang Shuancang Yu Tongbing Su State Key Laboratory of Vegetable Biobreeding Beijing Vegetable Research CenterBeijing Academy of Agriculture and Forestry ScienceBeijing 100097China National Engineering Research Center for Vegetables Beijing Key Laboratory of Vegetable Germplasms ImprovementKey Laboratory of Biology and Genetics Improvement of Horticultural Crops(North China)Key Laboratory of Urban Agriculture(North)of Ministry of AgricultureBeijing Vegetable Research CenterBeijing Academy of Agriculture and Forestry ScienceBeijing 100097China Institute of Vegetables and Flowers Chinese Academy of Agricultural SciencesBeijing 100081China

Turnip mosaic virus(TuMV)constitutes one of the primary diseases affecting Brassica rapa,severely impacting its production and resulting in crop failures in various regions *** research has demonstrated the significance of plant translation initiation factors,specifically the eIF4E and eIF4G family genes,as essential recessive disease resistance *** our study,we conducted evolutionary and gene expression studies,leading us to identify e IF(iso)4E.c as a potential TuMV-resistant *** CRISPR/Cas9 technology,we obtained mutant *** plants with edited eIF(iso)4E.c *** confirmed eIF(iso)4E.c confers resistance against TuMV through phenotypic observations and virus content ***,we employed ribosome profiling assays on eif(iso)4e.c mutant seedlings to unravel the translation landscape in response to ***,we observed a moderate correlation between the fold changes in gene expression at the transcriptional and translational levels(R^(2)=0.729).Comparative analysis of ribosome profiling and RNA-seq data revealed that plant-pathogen interaction,and MAPK signaling pathway-plant pathways were involved in eIF(iso)4E.c-mediated TuMV *** analysis revealed that sequence features,coding sequence length,and normalized minimal free energy,influenced the translation efficiency of *** study highlights that the loss of e IF(iso)4E.c can result in a highly intricate translation mechanism,acting synergistically with transcription to confer resistance against TuMV.

关键词： Brassica rapa eIF(iso)4E.c TuMV Ribo-seq

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Formation mechanism of condensates, waxy and heavy oils in the southern margin of Junggar Basin, NW China

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Science China Earth Sciences 2017年第5期60卷 972-991页

作者： CHEN JianPing DENG ChunPing wang XuLong NI YunYan SUN YongGe ZHAO Zhe LIAO JianDe wang peirong ZHANG DiJia LIANG DiGang PetroChina Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China State Key Laboratory of Enhanced Oil Recovery Beijing 100083China Key Laboratory of Petroleum Geochemistry of CNPC Beijing 100083China PetroChina Xinjiang Oilfield Company Karamay 834000China Department of Earth Sciences Zhejiang UniversityHangzhou 310027China

It is a challenge to determine the source and genetic relationship of condensate, waxy and heavy oils in one given complicated petroliferous area, where developed multiple sets of source rocks with different maturity and various chemical *** central part of southern margin of Junggar Basin, NW China is such an example where there are condensates, light oils, normal density oils, heavy crude oils and natural gases. The formation mechanism of condensates has been seriously debated for long time;however, no study has integrated it with genetic types of waxy and heavy oils. Taking the central part of southern margin of Junggar Basin as a case, this study employs geological and geochemical methods to determine the formation mechanism of condensates,waxy and heavy oils in a complicated petroliferous area, and reveals the causes and geochemical processes of the co-occurrence of different types of crude oils in this region. Based on detailed geochemical analyses of more than 40 normal crude oils, light oils,condensates and heavy oils, it is found that the condensates are dominated by low carbon number n-alkanes and enriched in light naphthenics and aromatic hydrocarbons. Heptane values of these condensates range from 19% to 21%, isoheptane values from1.9 to 2.1, and toluene/n-heptane ratios from 1.5 to 2.0. The distribution of n-alkanes in the condensates presents a mirror image with high density waxy crude oils and heavy oils. Combined with the oil and gas-source correlations of the crude oils, condensates and natural gas, it is found that the condensates are product of evaporative fractionation and/or phase-controlled fractionation of reservoir crude oils which were derived from mature Cretaceous lacustrine source rocks in the relatively early stage. The waxy oils are the intermediate products of evaporative fractionation and/or phase-controlled fractionation of reservoir crude oils, while the heavy oils are in-situ residuals. Therefore, evaporative fractionation

关键词： Condensate Waxy oil Heavy oil Light hydrocarbons Evaporative fractionation Phase-controlled fractionation Southern margin of Junggar Basin

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原油单萜烃的分布及地球化学意义

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石油学报 2015年第11期36卷 1341-1348页

作者：程斌王培荣王铁冠王广利中国石油大学地球科学学院北京102249 油气资源与探测国家重点实验室北京102249 长江大学地球环境与水资源学院湖北武汉430100

应用全二维气相色谱-飞行时间质谱(GC×GC-TOFMS)对采集自塔里木、北部湾、准噶尔、琼东南及江汉盆地的共45件原油样品进行分析。借助标准样品对原油中18个C10化合物进行定性定量,其中包括2,6-二甲基辛烷(2,6-DMO)、2-甲基-3-乙基庚烷(2... 详细信息

应用全二维气相色谱-飞行时间质谱(GC×GC-TOFMS)对采集自塔里木、北部湾、准噶尔、琼东南及江汉盆地的共45件原油样品进行分析。借助标准样品对原油中18个C10化合物进行定性定量,其中包括2,6-二甲基辛烷(2,6-DMO)、2-甲基-3-乙基庚烷(2-M-3-EH)、1,1,2,3-四甲基环己烷、反-1-甲基-4-异丙基环己烷、1-甲基-3-异丙基苯和1-甲基-4-异丙基苯6种单萜烃化合物。研究表明,原油样品中均存在丰度不等的6种单萜化合物。高等植物精油催化加氢产物中检测到丰富的单萜烃,表明陆生高等植物为单萜烃的可能来源之一。新分子标志物参数2-M-3-EH/2,6-DMO(MTR)与Pristane/Phytane(Pr/Ph)相结合可以有效区分源自不同沉积环境源岩的原油样品:源于偏还原沉积环境源岩的原油具有较高的MTR和较低的Pr/Ph值,而源于偏氧化沉积环境源岩的原油则具有较低的MTR和较高的Pr/Ph值。定量数据表明,两类原油中MTR和Pr/Ph值的差异源于原油中2-M-3-EH及Phytane含量的差异,即两类原油样品中2,6-DMO和Pristane的含量范围十分相似,而2-M-3-EH及Phytane的含量范围则差异明显。偏还原环境下沉积的源岩所生成的原油中2-M-3-EH和Phytane的含量相对较高,而偏氧化条件下沉积的源岩所生成的原油中两者含量则相对较低。MTR可以与Pr/Ph一起用于判断源岩沉积环境的氧化还原程度,其对于生标含量很低或匮乏的轻质油及凝析油十分重要。

关键词：全二维气相色谱-飞行时间质谱(GC×GC-TOFMS) 单萜烃高等植物精油催化加氢分子标志物沉

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Efficient NO_x abatement by passive adsorption over a Pd-SAPO-34 catalyst prepared by solid-state ion exchange

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Chinese Chemical Letters 2024年第4期35卷 210-213页

作者： Linhui Liu Wuwan Xiong Mingli Fu Junliang Wu Zhenguo Li Daiqi Ye peirong Chen National Engineering Laboratory for VOCs Pollution Control Technology and Equipment Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China National Engineering Laboratory for Mobile Source Emission Control Technology China Automotive Technology&Research Center Co.Ltd.Tianjin 300300China

Palladium-exchanged chabazite(Pd-CHA) zeolites as passive NO_x adsorbers(PNAs) enable efficient purification of nitrogen oxides(NO_x) in cold-start diesel exhausts. Their commercial application, however,is limited by the lack of facile preparation method. Here, high-performance CHA-type Pd-SAPO-34 zeolite was synthesized by a modified solid-state ion exchange(SSIE) method using PdO as Pd precursor,and demonstrated superior PNA performance as compared to Pd-SAPO-34 prepared by conventional wetchemistry strategies. Structural characterization using Raman spectroscopy and X-ray diffraction revealed that the SSIE method avoided water-induced damage to the zeolite framework during Pd loading. Mechanistic investigations on the SSIE process by in situ infrared spectroscopy and X-ray photoelectron spectroscopy disclosed that, while PdO precursor was mainly converted to Pd^(2+) cations coordinated to the zeolite framework by consuming the-OH groups of the zeolite, a portion of PdO could also undergo thermal decomposition to form highly dispersed Pd~0 clusters in the pore channels. This simplified and scalable SSIE method paves a new way for the cost-effective synthesis of defect-free high-performance Pd-SAPO-34 zeolites as PNA catalysts.

关键词： Pd-SAPO-34 Passive NO_x adsorber Pd loading Solid-state ion exchange Pd transformation

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中西医结合治疗抑郁症的疗效及对患者血清单胺类神经递质的影响

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中华中医药学刊 2017年第5期35卷 1336-1339页

作者：王佩蓉杨春玉浙江省立同德医院精神科浙江杭州311122

目的:探讨盐酸文拉法辛联合自拟中药方治疗抑郁症的疗效及对患者血清单胺类神经递质的影响。方法:收治的抑郁症患者200例,按照随机数字表法分为治疗组100例和对照组100例。对照组口服盐酸文拉法辛,治疗组在对照组基础上服用自拟中药方... 详细信息

目的:探讨盐酸文拉法辛联合自拟中药方治疗抑郁症的疗效及对患者血清单胺类神经递质的影响。方法:收治的抑郁症患者200例,按照随机数字表法分为治疗组100例和对照组100例。对照组口服盐酸文拉法辛,治疗组在对照组基础上服用自拟中药方。两组疗程均为8周。结果:治疗组总有效率(92.00%)高于对照组(79.00%),且有统计学差异(P<0.05);治疗组患者治疗后HAMD评分低于对照组,ADL评分高于对照组,且有统计学差异(P<0.05);治疗组患者治疗后血清DA、NE、5-HT水平高于对照组,且有统计学差异(P<0.05);治疗组患者治疗后心烦易怒、精神抑郁、情绪不宁积分低于对照组,且有统计学差异(P<0.05);治疗组不良反应发生率(10.00%)低于对照组(36.00%),且有统计学差异(P<0.05)。结论:盐酸文拉法辛联合自拟中药方治疗抑郁症的疗效显著,调节患者血清单胺类神经递质的代谢水平,具有重要意义。

关键词：盐酸文拉法辛自拟中药方抑郁症疗效单胺类神经递质

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烃源岩排烃的模拟实验研究

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新疆石油地质 1991年第4期12卷 307-315页

作者：侯读杰林壬子王培荣江汉石油学院

本文对黄县褐煤、茂名油页岩进行了热模拟实验。根据对模拟实验的产物分析,取得了一些认识:①排出烃的nC_(21)^-/nC_22^+比残留烃要高。甾萜烷,尤其是C_(27)/C_(29)甾及C_(29)萜烷、C_(30)萜烷的βα/αβ值具有较大的差异。相对于其他... 详细信息

本文对黄县褐煤、茂名油页岩进行了热模拟实验。根据对模拟实验的产物分析,取得了一些认识:①排出烃的nC_(21)^-/nC_22^+比残留烃要高。甾萜烷,尤其是C_(27)/C_(29)甾及C_(29)萜烷、C_(30)萜烷的βα/αβ值具有较大的差异。相对于其他多环芳烃,低分子量的萘系列、联苯系列、芴系列被优先排出。重质芳烃组分如芘、(艹屈)系列、荧蒽系列则难于运移;②通过对不同温阶残留烃与排出烃的纵向对比研究,发现随排烃量的增加,它们之间的差别变小。

关键词：石油排烃模拟试验油页岩运移

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卫生监督工作中引入第三方机制研究

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中国卫生法制 2019年第5期27卷 41-47页

作者：王佩蓉上海市普陀区卫生和计划生育委员会监督所

相关专业机构或团体以第三方监管主体的身份参与卫生监测与评价工作,是通过市场机制和社会机制改变政府主导的单一行政管理模式,加强卫生监督、创新监管模式的有益尝试。分析卫生监督引入第三方机制的理论基础与现实意义、发展现状及实... 详细信息

相关专业机构或团体以第三方监管主体的身份参与卫生监测与评价工作,是通过市场机制和社会机制改变政府主导的单一行政管理模式,加强卫生监督、创新监管模式的有益尝试。分析卫生监督引入第三方机制的理论基础与现实意义、发展现状及实践障碍,提出优化卫生监督第三方机制的主体建设、构建卫生监督第三方机制的激励模式、细化卫生监督第三方机制的责任分担规则、强化卫生监督第三方机制的监管模式等完善对策。

关键词：卫生监督第三方机制公私协力理论

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