Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Liquid grinding-aid cement hexavalent chromium reducing agent and synthesis and application thereof
The invention discloses a liquid grinding-aid cement hexavalent chromium reducing agent and synthesis and application thereof, organic low-valence metal salt is generated through organic acid and metal oxide, and high coordination activity is continuously generated under the complexing action of alcohol amine ester formed by esterification of alcohol amine and organic acid and under the reaction of incompletely esterified organic acid, so that the hexavalent chromium reducing agent is obtained. The metal oxide continuously forms low-valence metal ions, so that the content of the low-valence metal ions in the solution is increased, the problem that the solid phase of the low-valence metal oxide is difficult to directly generate solid-solid redox reaction with hexavalent chromium in the cement is avoided, and the problem that the reduction performance is insufficient due to the fact that high-concentration low-valence metal salt is difficult to form is also avoided; besides, due to the generation of a large amount of coordination, the thermal stability and long-term stability of the liquid grinding-aid cement hexavalent chromium reducing agent are improved, and due to the existence of a large amount of low-valence metal ions, namely the existence of effective reducing components, the reduction efficiency of hexavalent chromium is greatly improved.
本发明公开了一种液态助磨型水泥六价铬还原剂及其合成与应用，通过有机酸与金属氧化物生成有机低价金属盐，在醇胺与有机酸酯化形成的醇胺酯络合作用及未完全酯化有机酸反应下，高配位活性连续不断产生，金属氧化物不断形成低价金属离子，增加低价金属离子在溶液中的含量，规避了低价金属氧化物固相难以与水泥中六价铬直接发生固‑固氧化还原反应，也规避了难以形成高浓度低价金属盐致使还原性能不足等问题；此外，因大量配位产生，使得液态助磨型水泥六价铬还原剂的热稳定性和长期稳定性提升，并且因大量低价金属离子的存在，也即是有效还原组分的存在，六价铬被还原的效能大幅度增加。
Liquid grinding-aid cement hexavalent chromium reducing agent and synthesis and application thereof
The invention discloses a liquid grinding-aid cement hexavalent chromium reducing agent and synthesis and application thereof, organic low-valence metal salt is generated through organic acid and metal oxide, and high coordination activity is continuously generated under the complexing action of alcohol amine ester formed by esterification of alcohol amine and organic acid and under the reaction of incompletely esterified organic acid, so that the hexavalent chromium reducing agent is obtained. The metal oxide continuously forms low-valence metal ions, so that the content of the low-valence metal ions in the solution is increased, the problem that the solid phase of the low-valence metal oxide is difficult to directly generate solid-solid redox reaction with hexavalent chromium in the cement is avoided, and the problem that the reduction performance is insufficient due to the fact that high-concentration low-valence metal salt is difficult to form is also avoided; besides, due to the generation of a large amount of coordination, the thermal stability and long-term stability of the liquid grinding-aid cement hexavalent chromium reducing agent are improved, and due to the existence of a large amount of low-valence metal ions, namely the existence of effective reducing components, the reduction efficiency of hexavalent chromium is greatly improved.
本发明公开了一种液态助磨型水泥六价铬还原剂及其合成与应用，通过有机酸与金属氧化物生成有机低价金属盐，在醇胺与有机酸酯化形成的醇胺酯络合作用及未完全酯化有机酸反应下，高配位活性连续不断产生，金属氧化物不断形成低价金属离子，增加低价金属离子在溶液中的含量，规避了低价金属氧化物固相难以与水泥中六价铬直接发生固‑固氧化还原反应，也规避了难以形成高浓度低价金属盐致使还原性能不足等问题；此外，因大量配位产生，使得液态助磨型水泥六价铬还原剂的热稳定性和长期稳定性提升，并且因大量低价金属离子的存在，也即是有效还原组分的存在，六价铬被还原的效能大幅度增加。
Liquid grinding-aid cement hexavalent chromium reducing agent and synthesis and application thereof
一种液态助磨型水泥六价铬还原剂及其合成与应用
JIANG JUN (Autor:in) / LU ZHONGYUAN (Autor:in) / RELO (Autor:in) / LYU SHUZHEN (Autor:in)
03.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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