Abstract: The present invention relates to a method for producing a carbonate. The method of the present invention can safely remove a catalyst used in a carbonate production reaction. The method of the present invention can prevent defects that may occur due to the catalyst in the process of purifying the product in the carbonate production reaction. The method of the present invention can produce the carbonate in high yield.

Abstract: The present invention relates to a method for producing a carbonate. The method for producing a carbonate according to the present invention is capable of removing a catalyst applied in the preparation process with high efficiency, without damaging an adsorbent.

Abstract: The present invention relates to a method for preparing a carbonate. The method for preparing a carbonate of the present invention can effectively prepare high-purity EMC and DEC with a high DMC conversion rate. The method of the present invention can reduce energy costs and maintenance costs by reducing a load on a heat exchanger.

Abstract: The present invention relates to a method for preparing a carbonate. According to the method according to the present invention, it is possible to increase the DMC conversion rate and EMC selectivity in a transesterification reaction of DMC and EtOH.

Abstract: The present invention relates to a method for producing a carbonate. According to the method of the present invention, column plugging occurring in a producing process of a carbonate, specifically, a purification process, can be suppressed.

Abstract: The present specification provides a method of preparing a heterogeneous linear carbonate, including transesterifying an aliphatic alcohol and a symmetric linear carbonate in the presence of a catalyst, wherein the catalyst is a porous type basic ion exchange resin having an exchange capacity of 1 (eq/l-wet resin) or more and 1.5 (eq/l-wet resin) or less. The preparation method of the present specification provides a method of preparing a heterogeneous, symmetric linear carbonate and asymmetric linear carbonate in high yield without a process of reactive distillation.

Abstract: The present invention relates to a method of preparing a heterogeneous linear carbonate, the method including performing a transesterification reaction of dimethyl carbonate (DMC) and ethanol (EtOH) in the presence of a catalyst, wherein the catalyst is one or more selected from the group consisting of lithium methoxide (LME), lithium ethoxide (LEE), sodium methoxide (SME), sodium hydroxide (NaOH), and a mixture thereof, and the catalyst is input in a state of being dissolved in a sulfoxide-based solvent.

Abstract: Provided herein is a method of preparing a heterogeneous linear carbonate, including: performing a transesterification reaction of dimethyl carbonate (DMC) and ethanol (EtOH) in the presence of a catalyst; and filtering a composite obtained by the transesterification reaction through a filter.

Abstract: The present invention provides a method of preparing a heterogeneous linear carbonate, the method including transesterifying an aliphatic alcohol and a symmetric linear carbonate in the presence of a catalyst, wherein the catalyst is an acidic ion exchange resin, and a mass ratio of the aliphatic alcohol and the symmetric linear carbonate (aliphatic alcohol:symmetric linear carbonate) is 1:10 or more and 50:1 or less. The preparation method of the present specification provides a method of preparing a heterogeneous, symmetric linear carbonate and asymmetric linear carbonate in high yield without a process of reactive distillation, and is economical because a product and a catalyst can be easily separated.

Abstract: The present invention relates to a method for separating aromatic compounds contained in naphtha which includes an extraction step of contacting specific ionic liquids and naphtha and a step of separating the aromatic compounds from naphtha contacted with the ionic liquids.