Synthesis of the new framework phosphates and their catalytic activity in ethanol conversion into hydrocarbons

The series of new framework phosphate catalysts was synthesized and their activity in ethanol conversion to hydrocarbons was studied for the first time. The results were summarized for studies of NASICON (NZP) type phosphates formation A1±xZr2−xMx(PO4)3 (where A = H3O+, Li+, Na+, Cu0.5+, M = In, аt x = 0, 0.2) with the desired structure and properties controllable by variation of their chemical composition and synthesis parameters. The surface characteristics and catalytic properties of the resulting systems and the yields of the target products formed by ethanol transformations in inert atmosphere were analyzed on the basis of catalysts synthesis conditions. NaZr2(PO4)3 was the most active in hydrocarbons C3+ formation. On benzene yield the catalysts formed the row LiZr2(PO4)3 {II} ≈ Li1.2Zr1.8In0.2(PO4)3 {II} > LiZr2(PO4)3 {I} > NaZr2(PO4)3 {I}.

Graphical abstractThe series of new framework phosphate catalysts was synthesized and their activity in ethanol conversion to hydrocarbons was studied for the first time. The results were summarized for studies of NASICON (NZP) type phosphates formation A1±xZr2−xMx(PO4)3 (where A = H3O+, Li+, Na+, Cu0.5+, M = In, аt x = 0, 0.2) with the desired structure and properties controllable by variation of their chemical composition and synthesis parameters. The surface characteristics and catalytic properties of the resulting systems and the yields of the target products formed by ethanol transformations in inert atmosphere were analyzed on the basis of catalysts synthesis conditions. NaZr2(PO4)3 was the most active in hydrocarbons C3+ formation. On benzene yield the catalysts formed the row LiZr2(PO4)3II ≈ Li1.2Zr1.8In0.2(PO4)3 > LiZr2(PO4)3I > NaZr2(PO4)3.Figure optionsDownload full-size imageDownload high-quality image (110 K)Download as PowerPoint slideHighlights► We have synthesized new catalysts of ethanol conversion of formula A1±xZr2−xMx(PO4)3. ► The catalysts were active in formation of ethene, hydrocarbons C3+ and aromatics. ► NaZr2(PO4)3 and LiZr2(PO4)3II were the most active in hydrocarbons C3+ formation. ► The most selective toward benzene was LiZr2(PO4)3II.