Ab Initio Study of Aluminum-Phosphorus Co-doped Graphene
第八届国际凝聚态理论与计算材料学会议

大会将请专家对以下领域作专题性的特邀报告:
(1). 凝聚态物理的最新进展:
A. 自旋电子学
B. 纳米材料
C. 固体量子信息和计算
D. 玻色-爱因斯坦凝聚
E. 强关联电子系统
F. 高温超导
G. 量子霍尔效应
H. 磁学
I 表面和界面
J. 半导体物理
K. 低维凝聚态物理
L. 介观物理
M. 软凝聚态物质
N. 生物物理
structure Metallic Phases in Solid Germane (GeH4) under Pressure 锗烷在
压力下的金属相
11:45 -12:15
12:15 -13:00
午餐
张振宇 橡树岭国家实验室
柳百新
清华大学
林海青 香港中文大学 牛谦 美国德克萨斯大学
7 月 16 日
凝聚态理论专题邀请报告 I 主持人:谢心澄 地点:芙蓉厅
14:30 -14:55 14:55 -15:20 15:20 -15:45 15:45 -16:10 16:10 -16:35 16:35 -16:50
7 月 16 日
Manipulating Magnetization States of Nanostructures Two-spin decoherence in semiconductor quantum dots
稀磁半导体(Al,Cr)N 中的氮空位与高温铁磁性的第一原理研究
蒋青 刘邦贵
吉林大学 中科院物理所
15:20 -15:45 15:45 -16:10 16:10 -16:35
Theoretical and experimental studies of semiconductor dilute nitrides and devices
铝硅磷质胶凝材料的微观结构与性能_周新涛

2 结果分析与讨论
2.1 偏高岭土粒度特性对铝硅磷质胶凝材料胶凝 性能及力学性能的影响 采用不同粒度组成的偏高岭土按 P2O5 与 Al2O3
的摩尔比为 0.202 与磷酸盐溶液混合,充分搅拌后, 分别测试其终凝时间及 7 d 抗压强度,其结果见表 2。 由表 1 和表 2 可以看出:随着偏高岭土粉体细度的 减小到一定的程度,偏高岭土与磷酸盐溶液反应的 速度成倍地加快,当其 D50 从 3.98 µm 降到 1.80 µm 时,其与磷酸盐溶液反应后所对应的胶凝材料的终 凝时间从 96 h 急降为 6 h,随着其粒径的继续减小, 其凝结时间下降的趋势趋于平缓。主要是由于偏高 岭土颗粒比表面积的增大,致使其与磷酸盐的有效 接触面积增加,更容易被磷酸盐溶液润湿包敷。 Torres–Sanchez 等[5]的研究指出:偏高岭土经过一定 时间的机械处理后,其颗粒表面的 Si 与 Al 的摩尔 比减小,形成一个富 Al 的包敷层,并有大约 30% 的活性更高的游离 Al2O3 形成。在常温高岭土可以 与磷酸盐溶液发生较为温和的反应(相对于 MgO), 形成无定形相的 Al2(HPO4)3 或 AlPO4 胶体,并包敷 于未反应的偏高岭土颗粒表面。相应地,随着偏高 岭土粒度的减小,其与磷酸盐溶液反应所得铝硅磷 质胶凝材料的力学性能呈明显上升的趋势,当其中 位径低至 1.80 µm 时,其 7 d 强度达到 92.5 MPa,随 着其粒度继续减小,其强度的上升趋势趋于平缓。
µm
(m2·g–1)
1
1.52 3.98 8.53 3.10
1.94
2
1.09 1.98 5.28 1.89
3.18
3
0.90 1.96 4.23 1.70
3.53
4
杂原子取代的磷酸铝系列分子筛的合成及进展

杂原子取代的磷酸铝系列分子筛的合成及进展XX(==========学院地址邮编 )摘要对沸石和沸石类分子筛材料的合成研究进行了综述, 介绍了磷酸铝系列分子筛的结构特点,对杂原子取代的磷酸铝系列分子筛的合成种类与方法进行了总结关键词沸石沸石分子筛杂原子磷酸铝分子筛无机合成Synthesis and March of the Hetero-atom Substituted the Aluminum phosphate’s cCoarse Zeolite-like Molecular SieveXX( )Abstract Research on synthesis of zeolite and zeolite-like molecular sieve materials were reviewed, introduce the composition’s characteristic of aluminum phosphat e’s coarse zeolite-like molecular sieve, summarize the synthetic method of the hetero-atom substituted the aluminum phosphate’s coarse zeolite-like molecular sieve.Keywords zeolite; zeolite-like molecular sieves; (APO)ALPO4-n ;hetero-atom; inorganic synthesis收稿:××××年××月。
收修改稿:××××年××月* 国家自然科学基金资助项目(No. xxxxxxxx)* * Corresponding author e-mail: aaa@1756年瑞典矿物学家Cronstedt[1]发现有一类天然硅铝酸盐矿物在灼烧时会产生泡沸现象,就称之为沸(Zeolite)。
镁铝水滑石催化剂英文

镁铝水滑石催化剂英文Magnesium-Aluminum Layered Double Hydroxide (LDH) CatalystsMagnesium-Aluminum Layered Double Hydroxides (LDHs) have emerged as promising catalysts due to their unique structure and properties. These materials are composed of positively charged hydroxide layers analogous to brucite (Mg(OH)2), which are intercalated with various anions or anion clusters. The versatility of LDHs lies in their ability to incorporate a wide range of anions into their layers, making them suitable for various catalytic applications.The structure of LDH consists of an alternating stacking of brucite-like layers and interlayer spacing that accommodates anions. This structure allows LDHs to exhibit tunable physicochemical properties, such as surface area, pore volume, and acid-base properties, which can be tailored to optimize catalytic performance.LDHs are often used as catalysts or catalytic supports due to their high surface area, excellent thermal stability, and ability to resist sintering at high temperatures. They can be activated by incorporating transition metals or transition metal oxides into their layers, which can significantly enhance their catalytic activity.One of the primary applications of magnesium-aluminum LDH catalysts is in the catalytic reforming of refinery by-products. LDHs can effectively catalyze the cracking of heavy hydrocarbons, facilitating the production of valuable light hydrocarbons, such as gasoline and jet fuel. This catalytic process is achieved under conditions of moderate temperatures and pressures, making it economically viable.Additionally, LDHs have been studied for their role in the catalytic hydrolysis of cellulose, a major component of biomass. The catalytic hydrolysis of cellulose represents a significant step towards the production of sustainable biofuels. LDHs areconsidered potential catalysts in this process due to their ability to facilitate cellulose breakdown through the activation of acid sites.The synthesis of magnesium-aluminum LDH catalysts can be achieved through various methods, including coprecipitation, hydrothermal synthesis, and sol-gel methods. The choice of synthesis method can significantly influence the physicochemical properties of the resulting LDH catalyst.In conclusion, magnesium-aluminum LDH catalysts are versatile materials with significant potential for industrial applications, particularly in the refining of fuels and the production of biofuels. The ability to tailor the properties of LDHs through their synthesis and modification offers an excellent opportunity for developing efficient and environmentally friendly catalytic processes. Future research is expected to explore further the potential of LDHs in catalytic applications and to develop new synthesis strategies to enhance their catalyticperformance.。
汽车发动机零部件用压铸铝合金

《铝加工》2016年第6期总第233期 技术工程/专利荟萃散,尺寸较细小;样品沿宽度方向晶粒组织基本 平;0°和90°方向卷边性能不理想,有待改进。
均勻,平均晶粒尺寸小于50um;漆刷线处于2级水Analysis on Samples of Aluminum Alloy Automotive Body SheetWEN Qing-hong, FENG Wang(Southwest Aluminum (Group) Co.,Ltd., Chongqing 401326, China)Abstract:Automobile lightweight has become a trend of automobile industry development in the world, demand for automotive sheet of aluminum alloy has increased daily. Analysis results have been evaluated after analyzing various compound properties of aluminum alloy automotive body sheet samples of certain plant.Keywords: microstructure; baking paint property; paintbrush line; crimping factor具有较好抗铝铸件表面粘砂的型芯砂欧洲专利WO2014077203本专利提供了一种由原砂、水玻璃粘结剂和无机粒状化合物等组成的铸造用型芯砂,其中无机粒状化合物是不溶于水 的。
采用本专利所发明的无机粒状化合物,在金属液浇注的高温作用下能释放出水蒸气或C02气体,它可使粘结薄膜发生 裂纹,使粘结剂失去粘结能力而溃散,从而将型芯砂很轻易地从铝铸件表面剥离下来。
研究生经典文献阅读要求

经典文献目录要求:1.每名同学结合本专业某一部经典著作写一份2000字以上的读书报告,入学时交到学院办公室。
2.每位硕士阅读经典文献时力求课内和课外相结合,以课内阅读监督课外阅读。
必须在第二学期期末之前提交一份2000字书面文献阅读报告。
无机化学专业学术规范与科技写作:1.中华人民共和国著作权法(2001年修正)。
全国人民代表大会常务委员会公报,2001 2.中华人民共和国著作权法实施条例。
中国出版,2002(9)。
高等有机化学:1.K. Fukui, “Molecular Orbitals in Chemistry,Physics, and Biology,” P.0. Löwdin and B.Pullman, Ed., Academic Press, New Y ork, N. Y., 1964, p 513,2.R.B.Woodward and R.Hoffmann,J.Am.Chem.Soc.,87,395(1965)3.Alvarez S, Vicente R, R. Hoffmann, J.Am.Chem.Soc.,107,6253-6277(1985)4.Cao Y W,Cai X D, Li T J et al. mon, 1999:16055.Pope M, Kallmann H P, Magnante P. J Chem Phys, 1963,38:2042.配位化学:1.Stynes, H. C. and Ibers, J. A. Inorg. Chem., 1971, 10, 2304.2.Gaswick, D. and Haim, A. J. Am. Chem. Soc., 1974, 96, 7845.3.Basolo, F., Gray, H. B. and Pearson, R. G. J. Am. Chem. Soc., 1960, 82, 4200. 4.Cannon, R. D. and Gardiner, J. Inorg. Chem., 1974, 13, 390.高等无机化学:1.Ralph G. Pearson, J. Am. Chem. Soc.; 1969; 91(5); 1252-1254.2.Steven A. Sunshine, Douglas A. Acc. Chem. Res.; 1987; 20(11); 395-400.3.William C. Bray, Chem. Rev.; 1932; 10(1); 161-177多酸化学:1.Pope, M. T., Heteropaly and Isopaly Oxometalates, Berlin, Heidelberg New York, Spring Verlay,1983.2.王恩波,等:《多酸化学导论》,北京化工出版社。
拟薄水铝石发展实验文献

The raw materials used were mainly sodium metaaluminate, carbon dioxide, and ammonium nitrate. The operation procedure is as follows: the aqueous phase which first flowed through the channel did not mix with the original sodium metaaluminate solution; after that, the circulation of the NaAlO2 solution was started. The volume of NaAlO2 aqueous phase was 0.5 L. The reaction occurred at the temperature of 25 ℃, and the pH was recorded during the whole reaction process. After the pH reached a certain value, the reaction was stopped, and the product was aged for 1 h at a temperature of 70 ℃ and then washed by an ammonium nitrate concentration of 0.01%(amount of substance fraction). After that, it was leached out and dried at 70 ℃ for 10 h. After the calcination of the PB at 550 ℃ for 4 h in a muffle furnace, the microporous γ-Al2O3 could be obtained.
熔盐电镀制取铝电解用TIB2惰性阴极

收稿日期:2004-01-02基金项目:国家重点基础研究与发展规划项目(G 1999064903);·第25卷第9期2004年9月东北大学学报(自然科学版)Journal o f Nort heastern U ni versit y (N at ural S cience )V o l.25,No.9S e p !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.2004文章编号:1005-3026(2004)09-0873-03熔盐电镀制取铝电解用T i B 2惰性阴极徐君莉,石忠宁,邱竹贤(东北大学材料与冶金学院,辽宁沈阳110004)摘要:采用熔盐电解法在碳阴极上电镀T i B 2铝电解用惰性阴极材料,电解温度800C ,电解质组成(质量分数,%)为KC l 4.8,KF 55.7,K 2T i F 615.3,KBF 424.2,电流密度为0.3A /c m 2,电解3h ·对制得的镀层做XRD 和EM P 电子探针形貌分析,实验结果表明,镀层成分为单一的T i B 2,无杂相·镀层厚度可达0.2mm ,表面平整,分布均匀,与碳基体结合良好,且有金属光泽·说明该电解条件下,T i 和B 能够在阴极上共沉积并生成T i B 2·关键词:铝电解;惰性阴极;熔盐电镀;T i B 2涂层中图分类号:T F 821文献标识码:A现在工业铝电解槽的槽破损主要是阴极碳块的破损,这主要是目前铝电解槽的阴极是碳阴极,它虽能够较好地满足铝电解生产的需要,但由于碳对铝液的湿润性不好,使冰晶石熔体,尤其是其中的钠浸入碳块,促使碳阴极体积膨胀甚至产生裂缝,导致电解槽破损[1,2]·另外,电解质还可能渗漏至阴极钢棒,致使阴极产品铝中含铁量升高,降低产品质量·近年来T i B 2被公认为是较为合适的可代替碳阴极的材料[3!5],因为T i B 2在铝中溶解度很小,具有良好的导电性和热稳定性,对铝液有良好的湿润性,能有效防止电解质熔体和钠的侵蚀[6,7]·T i B 2阴极表面不易生成沉淀或结壳,这不仅能使炉膛比较规整,使电流分布均匀,减少磁场对铝液的扰动,减缓二次反应过程,提高电流效率,也能改善铝的质量·炉底沉淀和结壳的减少,使得炉底电压降较低,降低了生产能耗·如果它能和惰性阳极配合使用,则可以进一步降低极距,降低电耗,提高电流效率[8!10],使铝工业工艺获得重大突破·生产铝电解工业用T i B 2阴极的方法主要有:熔盐电解法、固相反应法、溶胶-凝胶法、化学气相沉积法·除了熔盐电解法外,其余几种方法生产纯度高的二硼化钛,成本甚高;因此往往采用在碳阴极上电镀T i B 2层作铝电解用惰性阴极,况且此项技术工艺过程简单,涂层费用低,能满足经济效益的要求[11]·国外对T i B 2涂层的研究比较深入,但目前也还没有在工业上得到完全应用·国内相关研究工作主要集中于东北大学、中南大学等高校,与国外水平相近·本文在前人的研究基础上对熔盐电解T i B 2工艺进行了进一步实验研究,希望能改进硼化钛涂层技术·1实验本文采用熔盐电镀法制取铝电解用T i B 2阴极·实验所用的装备如图1所示·图1熔盐电镀制取T i B 2阴极装置图F i 9.1Ex P e ri ment a l se tu P f o r e l ec tr o P l ati n 9T i B 2coati n 9实验中采用垂直方式电解,为了提高阳极电流密度,在碳阳极侧部套上刚玉套,避免电流从阳极侧部流过·本实验所用的电解质组成(质量分数,%)为Kc l4.8,KF55.7,K2t i F615.3,KBF424.2,均为化学纯·电解温度为8 C,电解时间为3h,电流密度为.3A/c m2·实验前预先把电解质烘干·氟化钾的烘干方法为:先把氟化钾加热到13 C时恒温24h,然后将其与NH4HF2按1I4质量混匀,在2 C恒温2h后,在45 !5 C下恒温3h·实验中观察到从炉中冒出白烟,直到白烟消失为止·其他的电解质均在2 C下烘干4h·电解过程中定时加入K2t i F6,KBF4以维持t i F2-6和BF-4的活度·2实验结果与讨论2.1槽电压与电解时间关系本实验中槽电压与电解时间关系如图2所示·图2槽电压与电解时间关系图F i9.2The r e l ati onshi P be t ween ce l l vo l t a9eand e l ec tr o l y ti c ti me从上图中可以看出,电解过程槽电压比较稳定,说明电解过程反应恒定·电镀实验后,发现t i B2镀层表面平整,有金属光泽·2.2镀层形貌分析对镀层表面作了电子探针形貌分析,如图3a;图3b为镀层中的钛的面分布图;图3c为碳基体和t i B2镀层界面形貌图·图3T i B2镀层形貌分析F i9.3Mo r P ho l o9y o f T i B2coati n9(a)—镀层表面;(b)—钛的面分布图;(c)—碳基体与t i B2镀层界面·从图3可以看出:镀层中钛含量的分布比较均匀,镀层比较致密,镀层的厚度约为.2mm·2.3XRD分析结果对镀层进行XRD成分分析,结果如图4所示·从XRD分析结果来看,镀层成分单一,均为t i B2·电解过程在电解槽中可能发生的反应有:t i F2-6+4e!-t i+6F-,!"=-1.19V;BF-4+3e!-B+4F-,!"=-1.6V;K++e!-K,!"=-2.924V;N a++e!-N a,!"=-2.714V·在此电解质体系中,从上述各物质的析出电位看,t i和B的析出电位比K,N a的高,更容易析出·而且t i F2-6和BF-4的分解电压很接近,t i 和B在阴极上可同时沉积出来,进一步反应生成t i B2或t i B·反应式为478东北大学学报(自然科学版)第25卷!G (T i B 2!!!)-461541+92.3T (J /m o l )·也有可能是T i (s )+B (s !!!)T i B (s ),!G (T i B !!!)-302990+82.8T (J /m o l )·总反应为T i F 2-6+2BF -4+10e !!!-T i B 2+14F -,或T i F 2-6+BF -4+7e !!!-T i B +10F -·在800C 下,!G (T i B 2!!!)-362503.1(J /m o l ),!G (T i B !!!)-214145.6(J /m o l )·由热力学计算可知:在实验条件下,反应T i F 2-6+2BF -4+10e !!!-T i B 2+14F -更有可能发生,但是并不能排除有T i B ,K ,N a 等在阴极上析出·从XRD 分析结果来看,本实验中没有在镀层中发现T i B ,K 20等杂质,这说明此种电镀工艺条件是比较优良的·3结论(1)熔盐电解制取T i B 2镀层,镀层成分均一,分布均匀,表面平整有金属光泽·(2)电解温度为800C ,电解质组成(质量分数,%)为KC l 4.8,KF 55.7,K 2T i F 615.3,KBF 424.2,在0.3A /c m 2的电流密度下电解3h ,能得到较为理想的T i B 2涂层·参考文献:[1]邱竹贤·铝电解原理与应用[M ]·徐州:中国矿业大学出版社,1998.274-278(@i u Z X.T heor y and a 11lication o f al u m inu melectrol y sis[M ].Xuzhou :Ch i na U n ivers it y of M i n i n g and T echno lo gy P ress ,1998.274-278.)[2]M cleod A D ,~a gg ert y J S ,S adoW a y D R.E lectricalres istivities o f m onocr y stalli ne and p o l y cr y stalli ne T i B 2[J ].Journal o f Am erican c era m ic s ociet y ,1984,67(9):705-708.[3]王兆文,孙淑萍,李冰,等·M oS i 2对二硼化钛惰性阴极材料性能的影响[J ]·东北大学学报(自然科学版),1999,20(6):619-621·(W an g Z W ,S un S P ,L i B ,et al .E ff ects o f M oS i 2add ition on p ro p erties o f t he T i B 2cat hode m aterial [J ].Journal o fN ort heastern Uniuersit y (Nat ural s cience ),1999,20(6):619-621.)[4]Christi n i R A ,D a W less R K ,R a y S P.A dvanced anodes and cat hodes utilized i n ener gy efficient alu m i nu m p roduction ce lls [R ].C oo p erative A g ree m ent Nu m ber DE -FC 07-98I D 13666.W ash i n g ton :U S D e p art m ent o f Ener gy ,2001.[5]邱竹贤·铝工业应用新型电极材料的研究[J ]·轻金属,2001,30(9):30-34·(@i u Z X.R esearch and deve lo p m ent o f t he i nert cat hodeand anode i n alu m i n i u m e lectro l y s is [J ].L i g ht M etals ,2001,30(9):30-34.)[6]B illehau g K ,0y e ~ A.I nert cat hode f or alu m i nu me lectro l y s is i n hall-heroult ce lls [J ].A l u m inu m ,1980,56(10):642-648.[7]M ak y ta M ,D anek V.E lectrode p os it of titan i u m d i bori defrom f used salts [J ].Journal o f A 11lied electroche m istr y ,1996,26(3):319-324.[8]@i u Z X ,L i @F.T i B 2coati n g on cat hode carbon b locks i nalu m i nu m ce lls [A ].L i g ht M etals [C ].W arrendale :TM S ,1992.431-437.[9]Rob i n A ,R i be iro R P.Pulse e lectrode p os ition of titan i u m oncarbon stee l i n t he L i F -N aF -KF eutectic m e lts [J ].Journalo f A 11lied e lectroche m istr y ,2000,30(2):239-246.[10]G ro t he i m K ,K vande ~.A lu m i nu m e lectro l y s is i n a 100Alaborator y ce ll W it h i nert e lectrodes [J ].M et all ,1988,42(6):587-589.[11]L i B ,Zhou F ,@i u Z X.P re p aration o f T i B 2coated cat hodefrom m o lten salts [J ].Journal o f M aterials o f s cience and T echnolo gy ,2002,17(S 1):171-173.Pre p arati on of T i B 2I nert C at hode b y E lectrode p ositi on Process f orA l u m i nu m E lectro l y sisXU Jun -li ,s~I zhon g -nin g ,@I U zhu -o ian (S choo l o f M aterials &M etallur gy ,N ort heastern U n ivers it y ,S hen y an g 110004,Ch i na .C orres p ondent :XU Jun-li ,E -m ail :j lxu " )Abstract :T he T i B 2as i nert cat hode m aterial f or alu m i nu me lectro l y s is ,W as e lectrode p os ited successf ull y on carbon cat hode as acoati n g b y W a y o f m o lten salts e lectro l y s is at 800C f or 3hours W it h a current dens it y 0.3A/c m 2,o f Wh ich t he com p os ition o f t he e lectro l y te used is 4.8KC l-55.7KF -15.3K 2T i F 6-24.2KBF 4i n %as m ass fraction.XRD W as used to detect t he com p os ition o f t he coati n g W it h t he E lectron P robe M icro A nal y zer (EPM )used f or m or p ho lo gy observation.T he results shoW ed t hat t he coati n g is com p osed o f a s i n g le com p ound ,i .e.,T i B 2W it hout i nclus ions.T he 0.2mm -t h ick T i B 2coati n g is s m oo t h and a pp earsm etallic luster ,es p eciall y it is bonded fir m l y to t he carbon substrate.It is confir m ed t hat T i and B can be co -de p os ited to f or m a T i B 2coati n g on carbon surf ace as an i nert cat hode i n t h is W a y .K e y words :alu m i nu m e lectro l y s is ;i nert cat hode ;m o lten salt e lectro l y s is ;T i B 2coati n g(R eceiued Januar y 2,2004)578第9期徐君莉等:熔盐电镀制取铝电解用T i B 2惰性阴极。