文献类型：专利

英文题名：Multiphase wet type oxidation catalyst for processing organic wastewater comprises noble metal comprising platinum, ruthenium, rhodium, iridium and gold, and rare-earth element comprising lanthanum, cerium, praseodymium and neodymium

作者：LIU W;TU S;HU Y

机构：[1]UNIV EAST CHINA SCI&TECHNOLOGY;[2]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN102125842-B

公开日：2013-07-10

语种：英文

收录：DERWENT

摘要：NOVELTY - A multiphase wet type oxidation catalyst comprises noble metal as active component, comprising platinum, ruthenium, rhodium, iridium and gold; and rare-earth element as assistant component, comprising lanthanum, cerium, praseodymium and neodymium. The active component and assistant component are supported via ceramic-active carbon carrier. The active carbon is 1-15 wt.% and every element in the active and assistant components accounts for 0.25-5 wt.% of the active carbon. USE - Multiphase catalyst for wet type oxidation (claimed), applicable to processing hardly degraded organic wastewater with high concentration. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of multiphase wet type oxidation catalyst comprising dipping nitrate or carbonate solution of assistant component on the ceramic-active carbon carrier for 12-48 hours; drying the dipped ceramic-active carbon carrier of assistant component for 8-12 hours at 90-140 degrees C, and dipping nitrate or chloride solution of the noble metal element active component for 12-48 hours; drying the dipped ceramic-active carbon carrier of assistant component for 8-12 hours at 90-140 degrees C, and performing the hydrogen reduction for 3-8 hours at 300-500 degrees C; and cooling to room temperature and passivating in nitrogen containing 10.5 vol.% of oxygen for 8-12 hours.