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柱撑

柱撑的相关文献在1995年到2022年内共计327篇,主要集中在化学、化学工业、废物处理与综合利用 等领域,其中期刊论文83篇、会议论文1篇、专利文献102058篇;相关期刊59种,包括湖北民族学院学报(自然科学版)、材料导报、中国粉体工业等; 相关会议1种,包括第二届全国环境化学学术报告会等;柱撑的相关文献由744位作者贡献,包括叶青、康天放、程水源等。

柱撑—发文量

期刊论文>

论文:83 占比:0.08%

会议论文>

论文:1 占比:0.00%

专利文献>

论文:102058 占比:99.92%

总计:102142篇

柱撑—发文趋势图

柱撑

-研究学者

  • 叶青
  • 康天放
  • 程水源
  • 侯文华
  • 吴平霄
  • 左树锋
  • 颜其洁
  • 刘勇军
  • 吴凯
  • 安太成
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 孙烨; 赵彬侠; 王楠; 刘甲斌
    • 摘要: 以蒙脱土为原料,以铝/铁/钛为柱撑元素,制备了Al-Fe-Ti-MMT吸附剂,并应用于吸附废水中的Cr(Ⅵ).用X射线衍射、红外光谱仪、热重分析、SEM-EDX及比表面积测量对Al-Fe-Ti-MMT材料进行了表征,并考察了Al-Fe-Ti-MMT吸附剂对废水中的Cr(Ⅵ)的吸附效果.结果表明:Al-Fe-Ti-MMT材料主要以窄缝型介孔和微孔为主,晶面间距d(001)为1.778 nm,比表面积为254.35 m2/g,平均孔径为3.575 nm.Al-Fe-Ti-MMT对Cr(Ⅵ)的单位吸附量可达7.2 mg/g,吸附过程符合Langmuir等温线模型,其吸附动力学符合拟二级动力学.
    • 徐向前; 刘淑敏; 李保军; 郭宪吉
    • 摘要: 氧化铁具有较小的带隙能,以氧化铁柱撑的层状过渡金属氧化物在可见光光催化领域具有重要的实际意义.在本研究中,分别以水合铌钼酸和水合钽钼酸(HNbMoO6·xH2O和HTaMoO6·yH2O)为层板主体,正丙胺为预支撑剂,硝酸铁为铁源,采用分步离子交换法制得Fe(Ⅲ)多聚体离子插层的层状铌钼酸盐和钽钼酸盐,在空气气氛中于673 K焙烧后,分别得到氧化铁柱层状铌钼酸(记为Fe2O3-HNbMoO6)和氧化铁柱层状钽钼酸(记为Fe2O3-HTaMoO6).Fe2O3-HNbMoO6的层间距为1.20 nm,层间柱子Fe2O3的高度为0.39 nm,BET比表面积为52.1 m^2/g,禁带宽度Eg为1.90 eV;Fe2O3-HTaMoO6的层间距为1.07 nm,层间柱高为0.27 nm,比表面积为18.2 m^2/g,Eg为1.93 eV.两种氧化铁柱层状产品均有良好的热稳定性,具有较小的禁带宽度,在可见光区呈现较强的吸收,是潜在的可见光光催化材料.
    • 徐向前; 刘淑敏; 李保军; 郭宪吉
    • 摘要: 氧化铁具有较小的带隙能,以氧化铁柱撑的层状过渡金属氧化物在可见光光催化领域具有重要的实际意义.在本研究中,分别以水合铌钼酸和水合钽钼酸(HNbMoO6?xH2O和HTaMoO6?yH2O)为层板主体,正丙胺为预支撑剂,硝酸铁为铁源,采用分步离子交换法制得Fe(Ⅲ)多聚体离子插层的层状铌钼酸盐和钽钼酸盐,在空气气氛中于673 K焙烧后,分别得到氧化铁柱层状铌钼酸(记为Fe2 O3-HNbMoO6)和氧化铁柱层状钽钼酸(记为Fe2 O3-HTa-MoO6).Fe2O3-HNbMoO6的层间距为1.20nm,层间柱子Fe2O3的高度为0.39nm,BET比表面积为52.1m2/g,禁带宽度Eg为1.90 eV;Fe2 O3-HTaMoO6的层间距为1.07 nm,层间柱高为0.27 nm,比表面积为18.2 m2/g,Eg为1.93 eV.两种氧化铁柱层状产品均有良好的热稳定性,具有较小的禁带宽度,在可见光区呈现较强的吸收,是潜在的可见光光催化材料.
    • 徐向前; 刘淑敏; 郭宪吉
    • 摘要: 以金属氧化物为层间柱子的层柱过渡金属氧化物是一类新型功能材料,其制备及结构研究具有重要意义.以钽钼酸锂为起始层状化合物,钛酸丁酯为钛源,正丙胺为预支撑剂,通过逐步离子交换方式制得钛(IV)多聚阳离子插层的层状钽钼酸盐,经高温焙烧后得到二氧化钛柱层状钽钼酸.采用粉末X射线衍射(XRD)、傅里叶变换红外(FT-IR)和扫描电镜(SEM)等技术对层柱产品及其前驱体的结构和形貌进行表征,并用漫反射紫外-可见(DR UV-Vis)光谱技术测定光吸收性质.结果显示,TiO2柱层状钽钼酸的层间距为1.12 nm,其层柱结构能耐受673 K的高温.该层柱产品的带隙能为2.41 eV,在可见光区具有一定吸收.
    • 戴荧; 欧阳小兵; 曹小红; 王有群; 张志宾; 刘云海
    • 摘要: 制备了十六烷基三甲基溴化铵柱撑膨润土,考察了pH、吸附剂用量、震荡时间、刚果红初始浓度和温度等条件对其吸附刚果红行为的影响,研究了热力学、动力学、等温线等.研究结果表明,十六烷基三甲基溴化铵柱撑膨润土较原土吸附能力强;吸附率随pH值增加而减小;吸附过程符合准二级动力学模型,化学吸附控制吸附速率;Langmuir等温模型与吸附过程相关系数较大,理论最大吸附量达819.83 mg/g;热力学参数表明熵增是吸附的推动力.本研究证实十六烷基三甲基溴化铵柱撑膨润土是具有前景的分离水环境中阴离子染料的吸附材料.%Cetyltrimethyl ammonium bromide pillared bentonite was prepared.The study on the adsorption of congo red onto the as-prepared material as functions pH,adsorbent dosage,shaking time,initial congo red concentration and temperature was carried out.Adsorptive thermodynamics,kinetics,and isotherms were further explored.The results showed that the pillared bentonite with cetyltrimethyl ammonium bromide had more adsorption capacity than original bentonite;the adsorption percentage decreased as pH increased;the adsorption process agreed with the pseudo-second-order model,indicating chemisorption controlled the adsorption process;Langmuir model had good correlation coefficient,figuring the theoretically maximal adsorption capacity of 819.83 mg/g;thermodynamics parameters proved that entropy increase was the driving force of adsorption.This research demonstrated that cetyltrimethyl ammonium bromide pillared bentonite was a promising adsorption material for removing anionic dye from aquatic environment.
    • 姚东辉; 黄志良; 李紫谦; 危钰
    • 摘要: To alleviate the supply and demand contradiction of potassium resources in China,we proposed a new oxidation-pillar/ion exchange method for extracting potassium from hydromica. The soluble sylvite was obtained by mixing oxidant,pillared agent and ion-exchange agent in hydration reaction system at 60 °C. The extracting ratio of potassium was measured by atomic absorption spectrophotometer and the structural change of hydromica in the process of potassium release was characterized by X-ray diffraction. The experimental results indicate that product still keeps the structure of layer silicates by oxidation-pillar/ion exchange,the basal spacing of hydromica was expanded from 1.0 nm to 4.0 nm and the extraction rate of potassium is up to 98%in 14 h.%为缓解我国钾资源的供需矛盾,采用氧化-柱撑/离子交换法从水云母中提取钾元素.在60°C温度条件下,水热反应水云母和氧化剂、柱撑剂、离子交换剂等反应试剂,过滤反应液,从滤液中得到可溶性钾盐.通过原子吸收分光光度计和X射线衍射,测定反应后提钾率和云母脱钾过程中的结构变化.实验结果表明,经过氧化-柱撑/离子交换后的水云母的层状硅酸盐结构未被破坏,基面间距由1.0 nm扩张到4.0 nm,14 h内层间K+几乎被全部提取出来,提钾率高达98%.
    • 韩朗; 庹必阳
    • 摘要: 通过稀溶液法将聚合阳离子Zr4+柱撑进入提纯钠基蒙脱石(Na-mt)层间合成锆柱撑蒙脱石(Zr-pmtn),再通过浸渍法制备活性炭负载锆柱撑蒙脱石(C/Zr-pmtn).对C/Zr-pmtn进行的XRD分析表明:Zr-pmtn和活性炭以2∶1的质量比制备的C/Zr-pmtn具有较大的晶面间距.采用C/Zr-pmtn对丁基黄药进行吸附研究,结果表明:①向初始pH=3、浓度为20 mg/L的100 mL丁基黄药溶液中投加0.1g的C/Zr-pmtn,20 °C下吸附50 min,对丁基黄药的吸附量为19.38 mg/g,丁基黄药去除率达99.72%.②C/Zr-pmtn对丁基黄药的吸附符合二级动力学方程和Lang-muir等温模型,C/Zr-pmtn对丁基黄药的最大吸附量达72.098 mg/g.可见,C/Zr-pmtn是选矿废水中丁基黄药的高效吸附剂.%The zirconium pillared montmorillonite (Zr-pmtn) has been synthesized by polymerization cationic Zr4+ pillared into the purified Na-montmorillonite interlayer through the dilute solution method,then synthesized activated carbon(C) supported Zr-pmtn material (C/Zr-pmtn) by the impregnation method.The XRD analysis shows that the prepared C/Zr-pmtn materials with a larger basal spacing through Zr-pmtn and activated carbon to 2 ∶ 1 mass ratio.Adsorption of butyl xanthatc by C/Zr-pmtn materials was investigated.The results show that under the addition of 0.1 g C/Zr-pmtn added to 100 mL butyl xanthate solution at 20 °C,initial pH =3 and concentration of 20 mg/L for 50 min,adsorption capacity of butyl xanthate is 19.38 mg/g,the removal rate of butyl xanthate is 99.72 %.The adsorption kinetics follows to pseudo-second-order equation and Langmuir isotherm model,maximum adsorption capacity of C/Zr-pmt onto butyl xanthate is 72.098 mg/g.It can be seen that C/Zr-pmtn is a high effective adsorbent for butyl xanthate in beneficiation wastewater.
    • 韩朗; 庹必阳; 路美容; 谢飞
    • 摘要: This study was to synthesize titanium pillared montmorillonite (Ti-pmnt) by polymeric cations Ti4+ into the interlayer spaces of the puriifed Na-montmorillonite with sol-gel method. The composites with a larger basal spacing (d(001)=2.94 nm) was characterized by X-ray diffraction analysis. Adsorption characteristics of Ti-pmnt were examined by cobalt ion as an adsorbate. The effects of solution pH value, adsorbent dosage, temperature, adsorption time and initial concentration of the Ti-pmnt adsorption of cobalt ions were investigated. The results showed that the better adsorption pH value was 4, adsorption equilibrium time was 120 min, the removal rate was 99.97%, adsorption capacity of 41.94 mg/g and the higher temperature was not beneifcial to the adsorption reaction. Adsorption kinetics followed the pseudo-second-order equation, adsorption isotherm data ift well with the Langmuir isotherm model.%本研究将聚合阳离子Ti4+通过溶胶-凝胶法柱撑插入提纯钠化蒙脱石层间,合成钛柱撑蒙脱石(Ti-pmnt)。X射线衍射分析表明合成材料具有较大的晶面间距(d(001)=2.94 nm)。采用Ti-pmnt合成材料对钴离子进行吸附,研究了pH值、吸附剂用量、温度、吸附时间及初始浓度对Ti-pmnt吸附钴离子的影响。结果表明:最佳吸附pH值为4,吸附平衡时间为120 min,去除率达到99.97%,饱和吸附量为41.94 mg/g,且升温不利于吸附反应进行。Ti-pmnt对钴离子吸附动力学遵循拟二级动力学方程,吸附等温线符合Langmuir等温模型。
    • 李进
    • 摘要: 以乳酸单体为原料,在ZnO柱撑皂石的催化下,直接缩聚合成了聚乳酸,并对其聚合反应动力学进行了研究.正交实验得到聚合最优方案为:反应体系中ZnO柱撑皂石加量为1%(wt),在180C下反应7h.红外谱图表明所得聚合物为聚乳酸.动力学分析表明,在130°C、使用ZnO柱撑皂石催化剂、0.085 MPa条件下,反应程度在2.35%~ 47.69%范围内,乳酸单体原位插层聚合反应符合三级反应.
    • 罗晋朝; 路程; 孙琪娟; 赵彬侠
    • 摘要: 采用离子交换法制备了Fe-Ni-Al柱撑蒙脱土( Fe-Ni-Al-MMT)催化剂。从焙烧温度、初始pH值、 H2 O2的浓度等方面对染料废水降解工艺进行优化,并从离子溶出和催化剂回收利用角度评价了催化剂的稳定性。结果表明:当焙烧温度为500°C时,催化剂活性达到最佳,在初始工艺条件pH=3, H2 O2浓度为36 mmol/L条件下反应4 h废水色度去除率为99.80%、COD去除率可达77.52%。%Clay pillared with Fe-Ni-Al was synthesized by ion exchange method and used as heterogeneous catalysts for catalytic wet peroxide oxidation degradation of stimulated dye wastewater. The effects of the calcination temperature, the initial pH and the concentration of the oxidant on the rate of degradation were investigated and the stability of catalyst was estimated between the active ion leaching and recovering tests in detail. The results indicated that the catalyst was calcinated under 500 °C, the initial pH of the waste water was 3. 0 and the concentration of H2 O2 was 36 mmol/L exhibited high activity. The discoloration and COD removal of waste water can reach 99. 80% and 77. 52%.
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