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The catalyst includes: supported Ziegler-Natta catalyst of titanium halide compound and organic electron donor compound supported with MgCl2 alcoholate carrier; aluminoxane prepared with trialkyl aluminum and water; and one kind of organic electron donor, such as organosilicon compound R2Si(OCH3)2, where R is phenyl, isopropyl, isobutyl or cyclopentyl.
该催化剂包括,a一种负载型的Ziegler-Natta催化剂,即将卤钛化合物和有机给电子体化合物负载在氯化镁醇合物载体上得到的固体催化剂,b一种通过三烷基铝与水反应而制备得到的铝氧烷和c一种有机电子给体,如有机硅化合物R 2 Si(OCH 3 ) 2 ,其中R为苯基、异丙基、异丁基或环戊基。
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Oiliness skin: Choose as well as having the constitutive clean salicylic acid product soft and floury; Anti-sunburning frost needs to have no oily emulsion; Use the essnece containing sial compound to be able to help your fat secretion restraining a pore; Use a chemistry to get rid of keratose once a week.
油性肌肤:挑选带有水杨酸成分的洁面产品;防晒霜需要无油的乳液;使用含有硅铝化合物的精华液能帮助你抑制毛孔的油脂分泌;一周一次使用化学去角质产品。
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It is a compound of aluminum, silica, and fluorine.
它是铝,硅和氟的化合物。
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A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.
一种用于丙烯聚合的催化剂组合物,所述催化剂组合物包括:一种或多种齐格勒-纳塔主催化剂组合物,该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体;一种或多种包含铝的助催化剂;选择性控制剂,该选择性控制剂包括至少一种包含硅的化合物,该化合物包括至少一种与硅原子连接的C 1-10 烷氧基;和一种或多种活性限制剂化合物,该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。
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It is indicated that the hexagonal calcium hydroferrite is a kind of high scattered calciferous compound. The interplanar spacing of hexagonal calcium hydroferrite is wide. The desilication activity of hexagonal calcium hydroferrite is higher. And the loss of alumina can be reduced.
结合X射线衍射分析讨论水合铁酸钙的脱硅机理,提出水合铁酸钙是一种高度分散的含钙化合物,其晶面间距较大,脱硅活性较高,并可大幅度降低铝损。
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The result shows that modification can make the β-Si phase thin when the joining amount is 0.3wt%, making the best modification result. Alloying elements Mn and Ni are always used to neutralize iron"s harm in aluminum alloys. They can form many kinds of complicated metallically compounds with Fe and Al, and eliminate needle-like iron-rich phases to reduce iron"s harm in Al-Fe alloy. Copper makes the alloy microstructure thick and electromagnetic stirring obviously makes the alloy microstructure thin, round the second phase, when the stirring voltage is 200V, making the best result; Reheat makes liquid phases emerge in the alloy, when the warming temperature is 650?
研究结果表明:红磷可以明显细化合金中的初晶硅,当加入量为0.3wt%时,取得最佳变质效果;锰、镍合金中加入后,通过形成多种复杂金属间化合物,细化针片状富铁相,减小铁对铝硅合金性能的危害;铜使合金微观组织发生粗化;电磁搅拌明显细化合金组织,使第二相圆整化,搅拌电压为200V时,取得最佳细化效果;二次加热使合金组织中产生部分液相,在650?
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A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 1 to 99 percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 99 to 1 percent of one or more alkoxysilane compounds.
一种用于丙烯聚合的催化剂组合物,包括:一种或多种齐格勒-纳塔主催化剂组合物,该齐格勒-纳塔主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体;一种或多种包含铝的辅催化剂;和两种或更多种不同的选择性控制剂的混合物,所述SCA混合物包括1到99%的一种或多种芳族单羧酸的一种或多种酯或其取代衍生物、和99到1%的一种或多种烷氧基硅烷化合物。
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The method adopts the following steps: after mixed, phosphorus source, silicon source, aluminum source, an organic template agent, water and a precursor of the SAPO molecular sieve are hydrothermally crystallized for at least 0.1 hour at the temperature ranging from 110 to 260 DEG C to obtain the SAPO molecular sieve; wherein, the preparation method for the precursor of the SAPO molecular sieve has the following steps:, the molar ratio is 0.03 to 0.6 R:(Si0.01 to 0.98: Al 0.01 to 0.6: P0.01 to 0.6): 2 to 500 H2O; wherein, R stands for mixture solution of raw materials which is blended by the phosphorus source, the silicon source, the aluminum source, the an organic template agent and water of the template agent;, the mixture solution of raw materials prepared in step reacts at the temperature which is at least 50 DEG C lower than the crystallization temperature for at least 0.1 hour.
本发明通过采用包括以下步骤:将磷源、硅源、铝源、有机模板剂、水和SAPO分子筛前驱体混合后在110~260℃的温度下水热晶化至少0.1小时获得SAPO分子筛;其中SAPO分子筛的前驱体的制备包括以下步骤:将摩尔配比为0.03~0.6R∶(Si0.01~0.98∶Al0.01~0.6∶P0.01~0.6)∶2~500H 2 O,式中R代表模板剂的磷源、硅源、铝源、有机模板剂和水混合成原料混合液;将步骤制备的原料混合液在低于晶化温度至少50℃的温度下反应至少0.1小时的技术方案较好地解决了该问题,可应用于含氧化合物制烯烃催化剂的制备过程。
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With an exception of Mo, most of elements distribute in sialic and sulfide state.
除 Mo 外,绝大部分元素存在于硅铝化合物和硫化物结合态中。
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Here we synthesize mesoporous aluminosilicate MAS-7 and MAS-9 and titanosilicate MTS-9 by using Beta, ZSM-5 and TS-1zeolite seed solution as inorganic precursor respectively and triblock copolymer surfactant as template.
我们分别使用Beta ,ZSM-5和TS-1导向剂为无机原料,以三嵌段共聚化合物表面活性剂为模板,合成了硅铝介孔分子筛MAS-7和MAS-9,钛硅介孔分子筛MTS-9。
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BN:氮化硼
)含氮的化合物太多了,除了三聚氰胺、相近的还有4聚、5聚、6聚.......,还有氮化锂(Li3N)、氮化镁(Mg3N2)、氮化铝(AlN)、氮化钛(TiN)、氮化钽(TaN)氮化钛、氮化钽、氮化钒(VN)、氮化镁、氮化铝 氮化硼(BN)、五氮化三磷(P3N5)、四氮化三硅(Si3N4),
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silicoaluminate:硅铝化合物
silicoaceticacid 硅乙酸 | silicoaluminate 硅铝化合物 | silicoamino-acid 硅氨基酸