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Synthesis of Ca(OH)2 nanoparticles

Calcium hydroxideCarbonatationIon exchange resinNanoparticelleNanoparticlesSintesiSynthesis


The invention relates to an innovative process for the synthesis of Ca(OH)2 nanoparticles by means of ionic exchange resins. The obtained nanoparticles can be used as consolidating and protective product in the preservation and consolidation of the calcareous architectural surfaces.

Technical features

A research team of the University of L’Aquila has developed an innovative process for the production of calcium Hydroxide nanoparticles, patented in Italy, France, Spain, Germany and UK, that presents advantages with respect to the currently used processes. It allows to obtain nanoparticles operating in ambient temperature and with a single step procedure. The process is characterised by high return, remarkable reduction of production time (few minutes compared to some hours of the common process) and easy and economic scalability at an industrial level. Furthermore, the research team has conducted studies on other types of nanoparticles and related production processes, thus developing an interesting know how available for industries.

Possible Applications

In the conservation of the Cultural Heritage:

  • Restoration of stuccoworks, plasters, fresco paintings, mural paintings, etc;
  • Protection and surface strengthening of historic mortar and gravestones of architectural interest;
  • Deacidification of paper and wood.

Other possible application fields:

  • Production of innovative concrete, etc.


  • Significant reduction of production time;
  • Savings on raw materials used;
  • Energy savings;
  • Simplified and scalable process;
  • High quality of the final product;
  • Completeness of the carbonatation process;
  • Positive interaction with other compounds.