Solid catalyst and method for manufacturing ethylene glycol from the solid catalyst

• Main Authors: TOSHIO KURAFUJI, YUZURU YAMAMOTO, MAKOTO HORIIKE, HIROFUMI II, NAOKI NEGORO
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The object of the invention is to provide a solid catalyst that can realize high oxalic diester conversion rate and high ethylene glycol selecting rate and recovery rate and can reduce reaction selectivity of a by-product, the invention also provides a method for manufacturing ethylene glycol from the solid catalyst. When a solid catalyst that satisfies two conditions exists, a diester compound presented by the formula (1) is reacted with hydrogen. The method for manufacturing ethylene glycol comprises the steps of mixing silica and/or silica precursor in an aqueous solution containing cuprammonium complex, and obtaining the solid catalyst by roasting, wherein, the silica precursor is a silicate hydrolyzate in the existence of ammonia and / or ammonium ion; the content of iron atom and aluminum atom tested in the solid catalyst by inductively coupled plasma emission spectrometry (ICP-AES method) are below 100 mass ppm. 本发明的课题为提供能实现草酸二酯的高转化率和乙二醇的高选择率·高收率，并能降低副产物的反应选择性的固体催化剂，以及使用该固体催化剂的乙二醇的制备方法。在同时满足下述2个条件的固体催化