检索结果-南通市图书馆

3D anchoring structured for LiFe_(0.5)Mn_(0.5)PO_(4)@cornstalk-C cathode materials

中国化学快报:英文版 2023年第8期34卷 302-305页

作者： Guangliang Zhang Riran Zang Man Mo Zhijie Fang Yangxian Huang Kunsong Hu Jiali Huang Xinxiang Liu Lingyun Huang Guohui Kang Weijian Li Haiqing Zhan Xianquan Ming Guanhan Huang Guiliang Li Feng Zhan School of Resources Environment and Materials Guangxi UniversityNanning 530004China School of Electronics Engineering Guangxi University of Science and TechnologyLiuzhou 545006China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China Guangxi Higher Education Key Laboratory of High Performance Structural Materials and Heat Treatment&Surface Processing Guangxi UniversityNanning 53004China South Manganese Group Limited Nanning 530029China

The organic carbon source coating LiFe_(x)Mn_(1-x)PO_(4)suffers from the problem of non-uniform carbon cladding.Too thick carbon cladding layer instead hinders the de-embedding of lithium ions.In this paper,we choose cornstalk as the carbon source,then LiFe_(0.5)Mn_(0.5)PO_(4)@cornstalk-C(LFMP@C-C)with 3D anchoring structure is prepared by the solvothermal method.The results show that the LFMP with cornstalk as the carbon source has better performance compared to the sucrose-coated LFMP material(LFMP@C).The discharge capacity of LFMP@C-C is 116 mAh/g for the first cycle at 1 C and the capacity retention rate is 94.0%after 500 cycles,and the discharge capacity of LFMP@C-C is more than 17.17%higher than that of LFMP@C.

关键词： LiFe_(0.5)Mn_(0.5)PO_(4) cornstalk Solvothermal method 3D anchoring structure Cathode materials

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reductive leaching of low-grade manganese ore with pre-processed cornstalk

引用

International Journal of Minerals,Metallurgy and Materials 2015年第12期22卷 1245-1251页

作者： Ai-fei Yi Meng-ni Wu Peng-wei Liu Ya-li Feng Hao-ran Li School of Civil and Environment Engineering University of Science and Technology Beijing State Key Laboratory of High-Efficient Mining and Safety of Metal Mines (Ministry of Education) State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences

cornstalk is usually directly used as a reductant in reduetive leaching manganese. However, low utilization of cornstalk makes low manganese dissolution ratio, In the research, pretreatment for cornstalk was proposed to improve manganese dissolution ratio. cornstalk was preprocessed by a heated sulfuric acid solution （1.2 M of sulfuric acid concentration） for 10 min at 80℃. Thereafter, both the pretreated solution and the residue were used as a reductant for manganese leaching. This method not only exhibited superior activity for hydrolyzing cornstalk but also enhanced manganese dissolution. These effects were attributed to an increase in the amount of reductive sugars resulting from lignin hydrolysis. Through acid pretreatment for cornstalk, the manganese dissolution ratio was improved from 50.14% to 83.46%. The present work demonstrates for the first time the effective acid pretreatment of cornstalk to provide a cost-effective reductant for manganese leaching.

关键词： manganese ore treatment cornstalk reductants leaching

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A facile two-step pretreatment method for delignification of cornstalk by combining choline hydroxide and 1-ethyl-3-methylimidazolium dimethylphosphate

A facile two-step pretreatment method for delignification of...

引用

第十七届全国化学热力学和热分析学术会议

作者： Junli Xu Xingmei Lu Suojiang Zhang Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of Sciences

Ionic liquids are recognized as solvents with great potential for cellulose dissolution and biomass pretreatment.1, 2 The aim of this work was to develop efficient cornstalk pretreatment methods with low energy cost. An effectively two-step method combining choline hydroxide（ChOH） and 1-ethyl-3-methylimidazolium dimethyl phosphate（[Emim][DMP]） was developed for delignification of cornstalk under mild conditions. In this two-step method, cornstalk sample was first soaked in ChOH aqueous solution for 3 hours, and then the residue was dissolved completely by [Emim][DMP] in 10 minutes. As compared to cornstalk sample, most lignin was removed and cellulose content was greatly increased in the regenerated cellulose rich material（CRM）, which was obtained from [Emim][DMP] solution by adding anti-solvent. Meanwhile, the CRM was converted into HMF with a high yield of 87.21 %. This two-step method enhanced the cornstalk pretreatment by increasing the dissolution of cornstalk and shortening the dissolving time at high pretreated temperature, which indicated that the two-step method for cornstalk was effective and eco-friendly.

关键词： cornstalk Two-step method Pretreatment Ionic liquids

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Fractionation of cornstalk by alkali-catalyzed organosolv pretreatment to monosaccharides and high-valued lignin

Fractionation of cornstalk by alkali-catalyzed organosolv pr...

引用

中国生物工程学会第十届学术年会暨2016年全国生物技术...

作者： Chenglun Tang Chenjie Zhu Jun Liu Hanjie Ying College of Biotechnology and Pharmaceutical Engineering Nanjing Tech University

Fractionation of cornstalk into carbohydrate(cellulose and hemicellulose) and lignin, was carried out using alkali-catalyzed organosolv pretreatment(ACOS). The processing parameters in the pretreatment process were optimized. More than 85% of total lignin was removed with low amounts of hemicellulose degradation under the following conditions: 110℃, 0.4%(w/v) NaOH, 90 min reaction time, and 60%(v/v) Et OH. The maximum recovery of total monosaccharide(81%)(cellulose/79%, hemicellulos/84%) was obtained at the combined severity factor value of(CSF = 4.15). The physical structure and chemical properties of alkali-catalyzed organosolv lignin(ACOSL) were analyzed. Results suggested that ACOSL showed intact structure compared to alkali lignin.

关键词： Alkali-catalyzed organosolv pretreatment cornstalk Enzymatic hydrolysis Butanol Lignin

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

STUDY ON CATALYTIC EXPERIMENTS OF METHANOL SYNTHESIS FROM cornstalk SYNGAS

STUDY ON CATALYTIC EXPERIMENTS OF METHANOL SYNTHESIS FROM CO...

引用

生物质能源技术国际会议

作者： Ling-feng ZHU~* Hai-tao MING Bo WU Zhe WANG Yu-ping ZHANG (School of Environmental and Municipal Engineering.North China Institute of Water Conservancy and Hydroelectric Power Zhengzhou 450011 China)

＜正＞Biomass energy is a renewable and Potential resource.In order to research the conversion of cornstalk biomass（the agricultural residues） into the fuel methanol and the effective utilization of biomass energy,the low-heat-value cornstalk gas was produced by means of the thermo-chemical method in the down-flow fixed bed gasifier.The cornstalk gas was purified and the technical procedures such as desulfurization.catalytic cracking of tar,deoxygenation.purification and hydrogenation were performed.With the optimum test result,the cornstalk synthesis gas was prepared.The catalytic experiments of methanol synthesis with cornstalk syngas were carried out in a tubular flow integral and isothermal reactor.The effect of the catalyst types,catalyst particle size was investigated at 235℃under the pressure 5MPa.The experimental results indicated that the proper catalyst for the synthetic reaction was C301 and the optimum catalyst size was 0.833mm×0.351mm.This study can provided basic data for the further studies of methanol synthesis from biomass（cornstalk） gas.

关键词： cornstalk Syngas Catalyst Methanol Synthesis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Formula Screening of Low-Cost Lactobacillus Suspension and Its Fermentation Effects

引用

Animal Husbandry and Feed Science 2011年第6期3卷 17-18,25页

作者： CAO Yan LI Mei-zi WU Ming-gen FU Min-jie Agricultural College of Yanbian University Yanji 133000 China Agricultural Extension Center of Longjing City of Jilin Province Longjing133400 China

[ Objective] The research aimed to study the low-cost medium instead of MRS to produce lactobacillus suspension and to provide a theoretical basis for the large-scale production of stalk fermented by lactobacillus. [ Method] Different concentrations of glucose and sodium chloride were added into the cooking liquor of maize flour, and lactobacillus was inoculated to ferment the stalk. The changes of pH were measured and compared with MRS medium. The optimum low-cost medium for producing lactobacillus and fermenting stalk was selected to ferment stalk. And the feeding experiment of cattle was made with fermented stalk and unfermented stalk to study the consumption quantity of different kinds of feeds. [ Resuit] The changes of pH in cornmeal and MRS media had the same tendency, but the decrease of pH in cornmeal medium was faster. The consumed quantity of fermented stalk feed was larger than that of unfermented feeds. [ Conclusion] Cornmeal medium can be used instead of MRS to produce lactobacillus and the production cost decreased more than 80%.

关键词： Lactobacillus Medium Fermentation Rice straw cornstalk

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rapid and productive extraction of high purity cellulose material via selective depolymerization of the lignin-carbohydrate complex at mild conditions

Rapid and productive extraction of high purity cellulose mat...

引用

中国化学会第十九届全国化学热力学和热分析学术会议

作者： Jiming Yang Xingmei Lu Xiaomin Liu Junli Xu Qing Zhou Suojiang Zhang Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and EngineeringState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of Sciences College of Chemistry and Chemical Engineering University of Chinese Academy of Sciences

The ILs are effective solvent to dissolve cellulose,however there were much room to improve in the pretreatment of lignocellulose using pure ILs.In this work,an new green cellulose extraction method – the selective degradation dissolution extraction（SDDE） method based on the [Bmim]Cl–AS（i.***.amino sulfonic acid（AS）） solvent system – was found which could rapidly extract a high yield and purity of cellulose from cornstalk at relatively low temperatures in a remarkably short time.In the SDDE method,the lignin-carbohydrate complex protective layer（LCCPL）,which wraps around the cellulose,was selectively depolymerized into small molecules;as a result,the rapid dissolution of lignocellulose biomass and the efficient removal of lignin and hemicellulose from the regenerated material（RM） were successfully achieved.The cellulose content of the RM could reach 99.16 ± 0.15%,which is the highest purity of cellulose extracted from the lignocellulose biomass in one step by IL solvent systems.The delignification rate could reach 97.56 ± 0.29% while the hemicellulose was completely removed in only 1 h after the cornstalk powder was dissolved in [Bmim]Cl–AS（the AS content was 1.5 wt%） at 100 °C.As the mild fractionation conditions reduced consumption of energy greatly as well as that the additive was cheap and environmentally friendly,the SDDE might be able to provide a feasible path to achieve an efficient cellulose extraction from lignocellulose biomass.In addition,utilization of the lignocellulose biomass mostly focused on the preparation of bioethanol via hydrolysis and fermentation.This work provided an alternative that high purity cellulose derivatives and cellulose composites could be produced from the lignocellulose biomass.

关键词： Ionic liquids amino sulfonic acid cornstalk depolymerization

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：