摘要:
The present invention relates to a heterogeneous enzymatic catalyst consisting of a macroprous silica monolith incorporating an enzyme immobilized by means of a compiling agent, to a process for preparing this enzymatic catalyst, to the use of the catalyst for carrying out chemical reactions by continuous flow heterogeneous enzymatic catalyst and to a process of continuous flow heterogeneous enzymatic catalysis using said catalyst.
摘要:
A process is provided for preparing an inorganic material in the form of an alveolar monolith of a silica matrix where the monolith includes interconnected macropores. The process includes at least one step of mineralizing an oil-in-water emulsion formed from droplets of an oily phase dispersed in a continuous aqueous phase and in which colloidal solid particles are present at the interface formed between the continuous aqueous phase and the dispersed droplets of oily phase. Such materials obtained according to this process may be used, especially for separative chemistry and filtration, for performing chemical reactions catalyzed in heterogeneous phase, as thermal or phonic insulators, or as templates for manufacturing controlled-porosity carbon skeletons.
摘要:
A process is provided for preparing an inorganic material in the form of an alveolar monolith of a silica matrix where the monolith includes interconnected macropores. The process includes at least one step of mineralizing an oil-in-water emulsion formed from droplets of an oily phase dispersed in a continuous aqueous phase and in which colloidal solid particles are present at the interface formed between the continuous aqueous phase and the dispersed droplets of oily phase. Such materials obtained according to this process may be used, especially for separative chemistry and filtration, for performing chemical reactions catalysed in heterogeneous phase, as thermal or phonic insulators, or as templates for manufacturing controlled-porosity carbon skeletons.
摘要:
The invention relates to a method for preparing a carbon aerogel from agglomerated carbon nanotubes, that comprises the following steps: (A) preparing an aqueous dispersion of carbon nanotubes in water in the presence of a dispersing agent; (B) forming a foam from the nanotubes aqueous dispersion of step (A) by bulking under the action of a gas in the presence of a foaming agent; and (C) freezing the foam obtained in step (B) and removing the water by sublimation. The invention also relates to the carbon aerogels thus obtained, and to their use essentially as partition materials or biomaterials.
摘要:
A method for preparing a carbon aerogel from agglomerated carbon nanotubes, includes the following steps: (A) preparing an aqueous dispersion of carbon nanotubes in water in the presence of a dispersing agent; (B) forming a foam from the nanotubes aqueous dispersion of step (A) by bulking under the action of a gas in the presence of a foaming agent; and (C) freezing the foam obtained in step (B) and removing the water by sublimation. The invention also relates to the carbon aerogels thus obtained, and to their use essentially as partition materials or
摘要:
A nanoporous carbon-loaded cement composite that conducts electricity. The nanoporous carbon-loaded cement composite can be used in a variety of different fields of use, including, for example, a structural super-capacitor as an energy solution for autonomous housing and other buildings, a heated cement for pavement deicing or house basement insulation against capillary rise, a protection of concrete against freeze-thaw (FT) or alkali silica reaction (ASR) or other crystallization degradation processes, and as a conductive cable, wire or concrete trace.