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Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO:Process optimization and reaction kinetics

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Chinese Journal of Chemical Engineering 2023年第1期53卷 300-309页

作者： Yingjie Song Shuqi Zhong yingjiao li Kun Dong Yong Luo Guangwen Chu Haikui Zou Baochang Sun State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China

As one of the few renewable aromatic resources,the research of depolymerization of lignin into highvalue chemicals has attracted extensive attention in recent *** wet aerobic oxidation(CWAO)is an effective technology to convert lignin like sodium lignosulfonate(SL),a lignin derivative,into aromatic aldehydes such as vanillin and ***,how to improve the yield of aromatic aldehyde and conversion efficiency is still a challenge,and many operating conditions that significantly affect the yield of these aromatic compounds have rarely been investigated *** this work,we adopted the stirred tank reactor(STR)for the CWAO process with nano-CuO as catalyst to achieve the conversion of SL into vanillin and *** effect of operating conditions including reaction time,oxygen partial pressure,reaction temperature,SL concentration,rotational speed,catalyst amount,and NaOH concentration on the yield of single phenolic compound was systematically *** results revealed that all these operating conditions exhibit a significant effect on the aromatic aldehyde ***,they should be regulated in an optimal value to obtain high yield of these *** importantly,the reaction kinetics of the lignin oxidation was *** work could provide basic data for the optimization and design of industrial operation of lignin oxidation.

关键词： Nano-CuO Sodium lignosulfonate Catalytic wet aerobic oxidation(CWAO) Aromatic aldehyde Reaction kinetics

Controllable and high-throughput preparation of microdroplet using an ultra-high speed rotating packed bed

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Chinese Journal of Chemical Engineering 2022年第8期35卷 116-124页

作者： Jing Xie Xiangbi Jia Dan Wang yingjiao li Bao-chang Sun Yong Luo Guang-wen Chu Jian-feng Chen State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China

Microdroplets and their dispersion,with a large specific surface area and a short diffusion distance,have been applied in various unit operations and reaction ***,it is still a challenge to control the size and size distribution of microdroplets,especially for high-throughput *** this work,a novel ultra-high speed rotating packed bed(UHS-RPB)was invented,in which rotating foam packing with a speed of 4000-12000 r·min^(-1) provides microfluidic channels to disperse liquid into microdroplets with high *** generated microdroplets can be directly dispersed into a continuous falling film for obtaining a mixture of microdroplet *** this UHS-RPB,the effects of rotational speed,liquid initial velocity,liquid viscosity,liquid surface tension and packing pore size on the average size(d_(32))and size distribution of microdroplets were systematically *** showed that the UHS-RPB could produce microdroplets with a d_(32) of 25-63μm at a liquid flow rate of 1025 L·h^(-1),and the size distribution of the microdroplets accords well with Rosin-Rammler distribution *** addi-tion,a correlation was established for the prediction of d_(32),and the predicted d_(32) was in good agreement with the experimental data with a deviation within±15%.These results demonstrated that UHS-RPB could be a promising candidate for controllable preparation of uniform microdroplets.

关键词： Ultra-high speed rotating packed bed Microdroplet Controllable preparation High throughput

Effects of Different Shading Treatments on Agronomic Characters of Cultivated Ginseng(Panax ginseng)in Farmland

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Agricultural Biotechnology 2018年第2期7卷 143-146,150页

作者： Hongpeng li yingjiao li Yuting ZHAO Xiangguo li Agricultural College of Yanbian University Yanji 133002Chin Meteorological Bureau of Tonghua Tonghua 134001China

As the main environmental factor of ginseng growth,illumination plays an important role in ginseng（ Panax ginseng） growth and development. Although ginseng is a shade-demanding plant,we need to get higher yield and quality under ideal light conditions. Three different illumination conditions for growth were created through different shading treatments. It was concluded that the adjustment of illumination according to monthly irradiance is beneficial to ginseng growth; appropriate illumination significantly affected root diameter; and SPAD value could also be used in the production of ginseng,but different light environments have influences on its accuracy. Reasonable light adjustment could improve the accuracy of the prediction value of SPAD.

关键词： Shade Illumination Panax ginseng SPAD valueHome

The Relationship between Ozone over Standard and Nitrogen Dioxide in Shihezi in Summer

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Meteorological and Environmental Research 2019年第5期10卷 22-24页

作者： li Jun li yingjiao Zhang Xingyao li Weijun Shihezi Environmental Monitoring Station Shihezi 832000China Shihezi Center for Diseases Prevention and Control Shihezi 832003China

By analyzing O3 concentration,NOx concentration and intensity of illumination in Shihezi City in summer of 2015-2018,the relationship between O3 concentration and NOx concentration in summer was *** results showed that O3 concentration rise was 14 h later than NO2 concentration rise when O3 concentration exceeded the standard in Shihezi in ***,NO2 concentration had certain effect on O3 formation.

关键词： Nitrogen oxide Summer Shihezi City Ozone

Sequence stratigraphy, paleogeography, and coal accumulation regularity of major coal-accumulating periods in China

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International Journal of Coal Science & Technology 2020年第2期7卷 240-262页

作者： Longyi Shao Xuetian Wang Dongdong Wang Mingpei li Shuai Wang yingjiao li Kai Shao Chao Zhang Caixia Gao Daxiao Dong Aiguo Cheng Jing Lu Congwei Ji Di Gao State Key Laboratory of Coal Resources and Safe Mining College of Geoscience and Surveying EngineeringChina University of Mining and Technology(Beijing)Beijing 100083China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590ShandongChina Innovation Technology Research Institute of Shaanxi Investment Group Co. Ltd.Xi'an 710061ShaanxiChina Shaanxi Coalbed Methane Development Company limited Xi'an 710119ShaanxiChina China National Administration of Coal Geology Beijing 100039China College of Resources and Environment Henan Polytechnic UniversityJiaozuo 454003HenanChina

There are 9 major coal-accumulating periods during geological history in China,including the Early Carboniferous,Late Carboniferous-Early Permian,Middle Permian,Late Permian,Late Triassic,Early-Middle Jurassic,Early Cretaceous,Paleogene and *** coal formed in these periods were developed in different coal-accumulating areas(CAA)including the North China,South China,Northwest China,Northeast China,the Qinghai–Tibet area,and China offshore *** this paper,we investigated depositional environments,sequence stratigraphy,lithofacies paleogeography and coal accumulation pattern of five major coal-accumulating periods including the Late Carboniferous to Middle Permian of the North China CAA,the Late Permian of the South China CAA,the Late Triassic of the South China CAA,the Early-Middle Jurassic of the North and Northwest China CAA,and the Early Cretaceous in the Northeast China *** to distribution of the coal-bearing strata and the regional tectonic outlines,we have identified distribution range of the coal-forming basins,sedimentary facies types and coal-accumulating *** sequence stratigraphic frameworks of the major coal-accumulating periods were established based on recognition of a variety of sequence *** distribution of thick coals and migration patterns of the coal-accumulating centers in the sequence stratigraphic framework were *** lithofacies paleogeography maps based on third-order sequences were reconstructed and the distribution of coal accumulation centers and coal-rich belts were predicted.

关键词： Coal-accumulating period Coal-accumulating area Sequence stratigraphy Paleogeography China

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仁恒滨海中心A酒店超限高层结构设计

建筑结构 2014年第18期44卷 9-13页

作者：江毅洪洲李应姣华南理工大学建筑设计研究院广州510641 广东德晟建筑设计研究院珠海519020

仁恒滨海中心A酒店结构高度为190.4m,高宽比约为6.3,采用带加强层的框架-核心筒结构体系。工程存在超B级高度、竖向构件不连续、侧向刚度突变等多项超限,且结构最大悬挑15.9m,属复杂超限结构。通过多手段计算分析、抗震性能化设计、设... 详细信息

仁恒滨海中心A酒店结构高度为190.4m,高宽比约为6.3,采用带加强层的框架-核心筒结构体系。工程存在超B级高度、竖向构件不连续、侧向刚度突变等多项超限,且结构最大悬挑15.9m,属复杂超限结构。通过多手段计算分析、抗震性能化设计、设置多道防线悬挂体系及采取适当的构造措施等对策,保证了结构的安全可靠和经济合理。

关键词：超限高层建筑抗震性能目标加强层框架-核心筒结构悬挂结构

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品种、出生季节和胎次对家兔繁殖性能的影响

中国饲料 2020年第16期 16-19页

作者：熊飙李英姣广西农业职业技术学院广西南宁530007 广西陆生野生动物救护研究与疫源疫病监测中心广西南宁530007

本研究旨在比较来自两个父系遗传起源的家兔在连续的出生季节(春、夏、秋和冬季)及不同胎次(初产、二胎和多胎次)的繁殖性能。试验选择初产、二胎和多胎次的两个品种的肉兔,分别为58只母兔和12只公兔,在符合季节的室内环境条件下饲养。... 详细信息

本研究旨在比较来自两个父系遗传起源的家兔在连续的出生季节(春、夏、秋和冬季)及不同胎次(初产、二胎和多胎次)的繁殖性能。试验选择初产、二胎和多胎次的两个品种的肉兔,分别为58只母兔和12只公兔,在符合季节的室内环境条件下饲养。在(46±6)d断奶,对105窝(55窝来自品种1,50窝来自品种2)母兔的生殖性能和数据进行记录。结果:品种对各指标的影响无显著差异(P>0.05)。秋季出生时母兔体重损失最小,而冬季和春节升高(P<0.05)。冬季窝产仔数和活产仔数显著高于夏季和秋季(P<0.05)。多胎次母兔的活体重显著高于初产母兔(P<0.05),同时多胎和初产母兔哺乳期21 d的泌乳量显著低于二胎母兔(P<0.05)。夏季和秋季分娩的母兔在21 d时窝仔数显著低于冬季(P<0.05),而夏季和秋季出生的仔兔体重和日增重显著高于其他季节(P<0.05)。冬季窝仔数显著高于夏季(P<0.05)。夏季出生的仔兔断奶重显著高于冬季和春节(P<0.05),但冬季出生仔兔在断奶时的窝重显著高于春节和夏季(P<0.05)。结论:春季时母兔和仔兔的繁殖行能和生长性能最差,但夏季高温对母兔繁殖性能有负面影响,冬季似乎比其他季节更适合本研究的饲养条件。

关键词：兔品种季节胎次繁殖性能

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浮动式压电振动送料装置的数值研究

压电与声光 2012年第2期34卷 233-235,239页

作者：田忠静王桂兰李英娇吉林通化市农机设计研究院吉林通化134000

利用ANSYS有限元分析软件,对浮动式压电振动输送装置进行了静态分析、模态分析及谐响应分析。明确了振动部件在交流电激励下的振动方式,找到了实现输送目的的振动频率及模态,并分析了浮动式压电振动输送装置的工作原理,为其深入研究提... 详细信息

利用ANSYS有限元分析软件,对浮动式压电振动输送装置进行了静态分析、模态分析及谐响应分析。明确了振动部件在交流电激励下的振动方式,找到了实现输送目的的振动频率及模态,并分析了浮动式压电振动输送装置的工作原理,为其深入研究提供了理论依据。

关键词：压电振动静态分析模态分析

利用分散剂处理盾构泥饼施工技术及应用效果评价研究

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铁道建筑技术 2018年第8期 85-87,91页

作者：李应姣中铁十一局集团城市轨道工程有限公司湖北武汉430074

以杭州某标段盾构机在复合地层中处理盾构机土仓结泥饼为背景,研究盾构机土仓气密性检测、土仓土气置换、分散剂注入与半气压搅拌浸泡施工技术。结果表明,采用该技术妥善解决了盾构机在不具备开仓条件下处理盾构机泥饼的问题,避免了人... 详细信息

以杭州某标段盾构机在复合地层中处理盾构机土仓结泥饼为背景,研究盾构机土仓气密性检测、土仓土气置换、分散剂注入与半气压搅拌浸泡施工技术。结果表明,采用该技术妥善解决了盾构机在不具备开仓条件下处理盾构机泥饼的问题,避免了人员进仓处理泥饼的风险以及因盾构机开仓而造成地面及临近建筑物发生沉降的风险,省略了地面开挖、进场设备旋喷加固、等待强度、施工协调、盾构停工等一系列繁琐工序,确保了盾构机安全、快速施工,缩短工期近3个月。采用的分散剂等材料与传统技术地面加固产生弃浆污染场地相比,更具有节能环保、绿色低碳的优点。同时,该技术获得了业主及业内人士的高度评价,综合效益显著,也为类似地铁施工提供借鉴和参考。

关键词：盾构泥饼分散剂不开仓土仓土气置换