| abstract |
In the present invention, at least one oxygen-containing compound preferably selected from saturated alcohols, unsaturated alcohols, diols, and ethers is selected from cerium oxide (CeO 2 ), aluminum oxide (γ-Al 2 O 3 ), and aluminum silicate. , Silica-alumina (SiO 2 -Al 2 O 3 ), alumina, zeolite, sulfonated resin, ion exchange resin, metal oxide (for example, lanthanum oxide, zirconium oxide, tungsten oxide, thallium oxide, magnesium oxide, zinc oxide) At least one dehydration catalyst selected from: ammonia (NH 3 ) or at least one basic substance selected from inorganic or organic compounds containing nitrogen that can develop into ammonia (NH 3 ) during the dehydration step; and, optionally, silica (SiO 2) or silica is selected from (SiO 2) containing a catalyst That ammonia (NH 3) at least one catalyst for dissociating preferably relates a method of dewatering in the presence of silica (SiO 2). [Selection figure] None |