New ambient temperature liquid calcium alkoxides, [Ca(O(CH2CH2O)3CH3)2] (1) and [Ca(O(CH2CH2O)3CH2CH3)2] (2), together with [Ca(OCH2C(CH3)3)2] (3), were synthesised by reaction of ammonia-activated calcium with the appropriate alcohol. Their potentiality as stone consolidant products was investigated and compared with those of other alkoxides: [Ca(OCH2CH3)2(CH3CH2OH)4] (4), [Ca(OCH3)2] (5), [Ca(OCH2CH2OCH3)2}9] (6), already described in the literature. Reaction of 1–3 with the atmosphere was studied, final products analysed and kinetic pathways investigated. The reaction produces CaCO3 and the vaterite/calcite ratios observed in the coatings generated from isopropyl alcohol solutions of 1–6 were found to considerably vary with the alkoxide precursor, which has a strong influence also on the morphology of the produced films. Furthermore, their efficiency as stone consolidants was tested by ultrasound measurements.
                                    合成了新的常温液态
钙烷基氧化物 [Ca(O(CH2CH2O)3   )2] (1) 和 [Ca(O(CH2CH2O)3CH2   )2] (2),以及 [Ca(OCH2C(
CH3)3)2] (3),通过与适当醇反应的
氨激活
钙。研究了它们作为石材巩固产品的潜力,并与文献中已描述的其他烷氧化物进行了比较:[Ca(OCH2   )2(   CH2OH)4] (4)、[Ca(O   )2] (5) 和 [Ca(OCH2CH2O   )2}9] (6)。研究了1-3与大气的反应,分析了最终产品并探讨了反应动力学路径。反应生成CaCO3,发现从1-6的
异丙醇溶液中生成的涂层中观察到的
方解石/维特石比率随着烷氧化物前体的不同而显著变化,这也对所产生膜的形态产生了强烈的影响。此外,通过超声波测量测试了它们作为石材巩固剂的效率。