NaOH-Al2O3缩合反应催化在缩合反应中,用载体固体碱作催化剂有如下优点:反应条件温和,催化反应活性高,选择性强,后处理简单,产率高且无机载体可再生重复使用.在实验中,用NaOH-Al2O3催化苯甲醛与丙酮,乙醛与丙酮的反应,3小时后,产物的收率达85%以上,操作十分简便.doi:10.3969/j.issn.1009-2854.2002.05.014胡伟武襄...
Reaction Information Disclaimer Word Equation Sodium Hydroxide + Aluminum Oxide + Hexafluorosilicic Acid = Sodium Hexafluoroaluminate + Jade + Water Fourteen moles of Sodium Hydroxide [NaOH], three moles of Aluminum Oxide [Al2O3] and four moles of Hexafluorosilic...
Al2O3+2CO2+5H2O +2Na2O =2Al(OH)3+2NaHCO3+2NaOH. Enter the amount of any of the substances to determine the ideal amounts to maximize the theoretical yield of the reaction. To find the limiting and excess reagents when a non-ideal amount of each...
over Pd/AI2 O3( I) catalyst as a f unction of reaction time ( 1 ) S ( C A ) ;( 2 ) X ( C H P ) % 872 石油学报 (石油加工 ) 第25 卷 3 结 论 制备 的 0.5 Pd/A l。O。催 化剂 对 CHP 催化加 氢 制备 CA 的反应 具有很高 的催 化 活性 ,它不 但能 ...
hclo4 和 naoh 反应方程式,如下: hclo4 与 naoh 反应方程式:NaOH+HClO4=NaClO4+H2O,离子 方程式:(H+)+(OH-)=H2O。 HClO4,高氯酸,是已知酸中酸性最强的酸,与 NaOH(强碱) 发生酸碱中和反应。 中和反应(neutralizationreaction)酸和碱互相交换成分,生 成盐和水的反应,酸+碱→盐+水。 中和反应的实质是:H+和...
Digestion, the first pH 7 ~ 8 with dilute NaoH solution toAl2O3deposition asAl(OH)3, then add KCl, the reaction generated free KOH solution to phenolphthalein as indicator of standard solution with HC1titration to end point. The recovery (R) 96.8% 1 (30.1%, determination of the relative...
,theTBABasa phasetransfercatalyst,(4 一 chloropyrimidinedioxide):(Zn): (NaOH)=1:10:20,thereactionkeepingat 100℃for2hwasthebestreactionconditions. Keywords:2 一 methyl 一 5,7 一 dihydrothieno[3,4 一 d]pyrimidine6,6 一 dioxide;herbicide;fungicide;synthesis (责任编辑邱丽) .相关...
Answer to: Consider the reaction Al2O3(s) and 3C(graphite) and 3Cl2(g) gives 2AlCl3(s) and 3CO(g). Determine the following at 298 K: By signing up,...
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Pt-Sn/Al2O3催化剂中氯离子与铂、锡 的相互作用及其对反应性能的影响 王承玉 吴荣安 林励吾 (中国科学院大连化学物理研究所) 提 要 通过改变P-St nAl O3—Cl催化剂中的氯含量、铂锡比和变更氯组分与金属组分的相对 距离制备了四个系列的PtSn/Al2O3催化剂 纯(络合型、一般络合型、非络合型和机械混合型),...