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Synthesis of Mg-Al-carbonate layered double hydroxide by an atom-economic reaction

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Particuology 2010年第3期8卷 198-201页

作者： Xiangyu Xu Dianqing Li jiaqing song Yanjun Lin Zhi Lv Min Wei Xue Duan State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China

A clean method for preparing layered double hydroxides （LDHs） has been developed, featured by using the hydroxides of two different metals as starting materials by atom-economic reactions. The reactions were carried out under hydrothermal conditions in either a high pressure autoclave or a microwave digester. The compositions, structural parameters and thermal behavior of the resulting LDHs are very similar to those of materials produced by using the separate nucleation and aging steps （SNAS） method. The major advantage of the new method is that no by-product is produced, so that filtration and washing processes are unnecessary. The consequent reduction in water consumption is beneficial to the environment.

关键词： Layered double hydroxides Atom-economic reaction Clean method Mg(OH)2Al(OH)3

Adsorptive desulfurization of diesel with mesoporous aluminosilicates

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Science China Chemistry 2009年第3期52卷 276-281页

作者： TANG Huang LI WangLiang LIU QingFen GUAN LiLi song jiaqing XING JianMin LIU HuiZhou National Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Graduate University of Chinese Academy of Sciences Beijing 100049China SINOPEC Research Institute of Petroleum Processing Beijing 100083China

Mesoporous aluminosilicates (MAS) bearing microporous zeolite units and mesoporous structures were synthesized by the hydrothermal method. Adsorptive desulfurization ability of model oil and hy-drotreated diesel was studied. The effects of template concentration, crystalization time and calcination time were investigated. The desulfurization ability of adsorbents was improved by transitional metal ion-exchanging. The adsorptive desulfurization of diesel was carried out on a fixed-bed system. The results show that the adsorptive capacity is MAS>MCM-41>NaY. The improvement of desulfurization ability of MAS by Cu+ is more significant than that of Ag+.

关键词： diesel adsorptive desulfurization mesoporous aluminosilicates acidity pore texture

A review of the development of asphalt foaming technology

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Journal of Road Engineering 2024年第3期4卷 334-347页

作者： Qiang Li Shijie song jiaqing Wang Ning Wang Shuai Zhang College of Civil Engineering Nanjing Forestry UniversityNanjing 210037China Jiangsu Zhongxing Maintainance Co. Ltd.Nantong 226015China

To comprehensively assess the current state-of-art in asphalt foaming technology, the following four key aspectshave been reviewed systematically: foaming principles, test methods, evaluation indicators, and influencing *** findings reveal that asphalt foaming was primarily driven by the vaporization of water, with deteriorationprocesses including bubble collapse and liquid film drainage. However, the current understanding of asphaltfoaming principles remains limited, primarily due to difficulties in capturing and precisely measuring its microscopic behaviors during asphalt foaming process. Volume changes provided an intuitive means to evaluate theexpansion capacity of asphalt and its foaming stability. Bubble evolution characteristics of foamed asphalt offeredpromising insights into its foaming performance. Traditional ruler and stopwatch-based assessments were beingsuperseded by automated techniques like laser and ultrasonic ranging. Nevertheless, the current measuringequipment still lacks the capability to comprehensively evaluate the foaming effect of asphalt across various dimensions. Asphalt temperature and foaming water consumption significantly affected asphalt foaming performance, and the inclusion of foaming agents typically led to a notable increase in the half life of foamed ***, the interaction between foaming agents and asphalt, as well as the underlying mechanisms affecting thefoaming effect, are still unclear and require further exploration. Future research should primarily focus on thecorrelation between asphalt foaming effect and mixture performance, aiming to guide the practical engineeringapplication of foamed asphalt mixtures and enlarge the advantages of such low-emission and sustainable mixtures.

关键词： Foamed asphalt Foaming mechanism Test methods Evaluation indicators Influencing factors

Efficient Contact between H_(2)O and N-Coordinate Ru Nanoparticles in Three-Dimensionally Ordered Macro/Mesoporous Carbon Boosting Alkaline HER

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Chinese Journal of Chemistry 2024年第2期42卷 164-170页

作者： jiaqing Luo Chunyu Liu Ruolin Zhang Yuanqing Sun Hua Xu Qingying Hu Manxue Zhang Jun Li Zhenxing Li Weiyu song Yuechang Wei Jian Liu State Key Laboratory of Heavy Oil and Bejing Key Lab of Oil&Gas Optical Detection Technology China University of PetroleumBeijing 102249China Laboratory of Heavy Oil at Karamay Ching University of Petroleum-Beijing at KaramayKaramayXinjiang 83400China Basic Research Center for Energy Interdisciplinary College of ScienceChina University of PetroleumBeijing 102249China Petrochemical Research Institute PetroChina Company LimitedBeijing 102206China BeijingNationalLaboratoryfor Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

In this study,a novel approach is proposed to achieve the uniformly dispersed Ru nanoparticles with N coordination loaded on three-dimensionally ordered macro/mesoporous carbon(3DOMMC)through simultaneous pyrolysis of Ru^(3+)and cyanamide on *** an alkaline medium,the synthesized catalysts exhibit exceptional hydrogen evolution reaction(HER)***,Ru-N/3DOMMC demonstrates a significantly low overpotential of 13.8 mV to achieve acrent density of 10 *** exhibits a mass activity 17.5 times higher than that of commercial Pt/*** outstanding performance could be attributed to the ultrahigh Ru dispersion and more efficient contact between active sites and reactant,which derived from the large specific surface area and interconnective three-dimensionally macro/mesopores of 3DOMMC.

关键词： 3DOMMC Hydrogen evolution reaction Electrocatalysis Solid-liquid contact Energy conversion

分子筛材料研究及其在催化裂化过程中的应用前景

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化学进展 2006年第4期18卷 501-506页

作者：潘晖华何鸣元宋家庆中国石油化工集团公司石油化工科学研究院北京100083

对近年来新合成的分子筛材料,如超大微孔分子筛、介孔分子筛、含D4R结构单元的分子筛的孔结构及合成技术进行综述,并探讨了这些新分子筛材料在催化裂化过程中的应用前景。

关键词：分子筛超大微孔介孔催化裂化

原位合成球花形貌多级孔ZSM-5及其催化甲醇制丙烯性能

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化学反应工程与工艺 2021年第6期37卷 505-512页

作者：童伟益宋家庆赵昱中国石油化工股份有限公司上海石油化工研究院绿色化工与工业催化国家重点实验室上海201208 北京化工大学化学工程国家重点实验室北京100029

为研究ZSM-5分子筛材料在甲醇制烯烃(MTP)反应中的选择性问题,通过表面硅钝化的后处理修饰和合成方法控制等多种手段,分别得到核壳结构、高模板剂有序多级孔及球花形貌的ZSM-5样品。结果表明:样品的硅铝比相近,且都具有较高的结晶度,相... 详细信息

为研究ZSM-5分子筛材料在甲醇制烯烃(MTP)反应中的选择性问题,通过表面硅钝化的后处理修饰和合成方法控制等多种手段,分别得到核壳结构、高模板剂有序多级孔及球花形貌的ZSM-5样品。结果表明:样品的硅铝比相近,且都具有较高的结晶度,相比常规ZSM-5分子筛,在MTP反应中均能不同程度地提升产物烯烃的选择性。其中,通过组合添加剂(尿素与氟化铵)协同合成的多级孔样品(S-HP),原位自组装形成尺寸为200~500 nm的均匀球花形貌,N;低温吸脱附数据显示,该样品在外比表面积并不特别大的情况下,具有较大的介孔孔容和平均孔径,其微介孔高效匹配形成"特殊"有序贯通的多级孔结构,利于传质扩散;同时,S-HP样品的NH;程序升温脱附(NH;-TPD)酸性表征呈现出高低两个峰相向融合、中强酸活性位显著增强,提供了优良的MTP反应分子吸附活性位。在MTP反应评价中,同比常规的ZSM-5分子筛,S-HP样品的丙烯和乙烯选择性分别从11%和9%提升至30%和15%,甲烷、乙烷和丙烷选择性分别从13.5%,3.0%和25.5%降低到3.0%,0.3%和5.5%,显著控制氢转移副反应的发生,热重结果显示,S-HP样品表现出更好的抗失活性能和稳定性。研究表明,MTP反应选择性和稳定性的控制参数,同时受到ZSM-5分子筛晶体结构和酸性分布的双重影响。

关键词：多级孔 ZSM-5 甲醇制丙烯

弹性、弹塑性材料显式模拟计算中的准静态加载速度研究

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固体力学学报 2019年第3期40卷 277-286页

作者：宋家庆陆勇顾欢达沈峰苏州科技大学土木工程学院

动力学显式算法采用时间积分原理,其较静力学隐式算法在强非线性问题中的适用性更广.为将此方法应用到岩土等非线性材料的计算中,考虑到显式算法中动能的影响会导致结果波动,分析动力学显式算法在模拟计算中的准静态加载速度的选取十分... 详细信息

动力学显式算法采用时间积分原理,其较静力学隐式算法在强非线性问题中的适用性更广.为将此方法应用到岩土等非线性材料的计算中,考虑到显式算法中动能的影响会导致结果波动,分析动力学显式算法在模拟计算中的准静态加载速度的选取十分必要,如何在缩短模拟消耗时间与结果准确性之间寻求平衡是论文研究重点.研究中提出以加载-位移曲线的波动比来评价准静态计算效果,首先开展弹性材料的平面应变模拟试验以分析弹模、密度、泊松比、围压4个参数对准静态加载速度取值的影响,结果表明:弹模、泊松比、围压的增大会提高准静态加载速度;密度的增大则会减小准静态加载速度.通过对各影响因素与准静态加载速度的相关性分析给出了准静态加载速度取值的经验公式.最后,选取能够反映砂土复杂力学特性的弹塑性本构模型,开展其平面应变模拟试验,对比分析准静态加载速度经验公式在弹性材料与弹塑性材料中的适用性差异,并提出应用建议公式.

关键词：弹塑性显式计算准静态波动比

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氧气存在下用CO还原NO的研究(英文)

物理化学学报 1999年第10期15卷 868-871页

作者：温斌何鸣元宋家庆宗保宁舒兴田路勇中国石油化工总公司石油化工科学研究院北京100083

用共沉淀法合成了镁铝水滑石和含铜镁铝水滑石 ,通过热活化 ,得到了含铜催化剂(CuHT)和不含铜催化剂 (HT) .XRD研究表明两种催化剂中都存在着MgO和Spinel晶相 .在无氧体系中 ,与HT相比 ,CuHT对NO和CO反应具有高的催化活性和宽的活性温... 详细信息

用共沉淀法合成了镁铝水滑石和含铜镁铝水滑石 ,通过热活化 ,得到了含铜催化剂(CuHT)和不含铜催化剂 (HT) .XRD研究表明两种催化剂中都存在着MgO和Spinel晶相 .在无氧体系中 ,与HT相比 ,CuHT对NO和CO反应具有高的催化活性和宽的活性温度窗口 .反应体系中少量氧气的引入对CuHT的反应活性无影响 ,但使HT的活性增加 ;氧气过量时 ,CuHT对NO和CO反应很快失活 ,而HT却保持着较高的活性 .

关键词：催化剂氧气一氧化碳一氧化氮还原

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基于绿色建筑的城市生态客厅设计的发展启示

山西建筑 2021年第19期47卷 142-144页

作者：宋佳清武汉大学湖北武汉430000

在食物供给需求矛盾,生态教育缺失,低碳及可持续发展的背景下,以绿色建筑和城市立体农场为理论基础,选取将绿色建筑技术和循环生态农业结合起来的城市生态客厅这一全新建筑类型,进行理论与设计的分析,着重于探讨基于绿色建筑技术的城市... 详细信息

在食物供给需求矛盾,生态教育缺失,低碳及可持续发展的背景下,以绿色建筑和城市立体农场为理论基础,选取将绿色建筑技术和循环生态农业结合起来的城市生态客厅这一全新建筑类型,进行理论与设计的分析,着重于探讨基于绿色建筑技术的城市生态客厅发展的重要意义,以期望对城市生态客厅的相关研究设计给出参考和借鉴意义。

关键词：可持续发展城市生态客厅绿色建筑循环生态农业