用水造房子     

朱文宇 《课外阅读》2012,(11):37

在南美洲秘鲁,有一个叫汪澳维利卡的地方,这里的老百姓祖祖辈辈用一种神奇的矿泉水来盖房子。这种矿泉水盖成的房子,一点也不比我们用钢筋水泥建造的房子差,它们不仅造价低廉,而且非常美观、实用。原来,汪澳维利卡这个地方的水,真算得上是名副其实的"矿泉水",里面富含大量的石膏、石灰、石英等矿物成分。当地居民在盖房子前,都会在房址的地基  相似文献   

Solubilities of 2-naphthalenesulfonic acid monohydrate and sodium 2-naphthalenesulfonate in sulfuric acid solution and their application for preparing sodium 2-naphthalenesulfonate     

张凤宝  景晖  朱文宇  张林  刘博  张国亮  夏清 《天津大学学报(英文版)》2016,22(3):273-278

The solubilities of 2-naphthalenesulfonic acid monohydrate and sodium 2-naphthalenesulfonate in sulfuric acid solutions were measured at temperatures ranging from 278.15 to 338.15 K by using a dynamic method. The concentration of sulfuric acid solution ranged from 0 to 80wt%,. The solubilities of 2-naphthalenesulfonic acid monohydrate and sodium 2-naphthalenesulfonate increased with temperature, and both of them were the lowest at 70wt %, of sulfuric acid solution(w~0_3 =0.70)while the highest in pure water. The solubility data were correlated by the modified Apelblat equation. Based on the solubility difference between 2-naphthalenesulfonic acid monohydrate and sodium 2-naphthalenesulfonate, a new technique in which sodium sulfate was used to replace sodium sulfite in the neutralization reaction was developed. The suitable mole ratio of H_2O to Na_2SO_4 in the neutralization reaction was 80∶1, and that of 2-naphthalenesulfonic acid monohydrate to Na_2SO_4 was 3.2∶1. The material balance under the suitable mole ratios was given and discussed.  相似文献