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发明公开
CN110801830A 一种氢解脱苄Pd(OH)2/C催化剂中钯循环利用的方法 无效 - 撤回

一种氢解脱苄Pd(OH)2/C催化剂中钯循环利用的方法
摘要：
一种氢解脱苄Pd(OH)2/C催化剂中钯循环利用的方法，属于贵金属回收技术领域。将失活钯炭催化剂先后用甲酸和H2O2处理，除去催化剂表面附着的多数有机物的同时，使催化剂表面钝化。将处理后的失活催化剂在专用焚烧炉中焚烧，灰分用王水溶解，直接用于浸渍沉积法制备新的Pd(OH)2/C催化剂。重新制备的Pd(OH)2/C催化剂用于六苄基六氮杂杂异伍兹烷氢解脱苄反应中，活性无降低。本发明实现了氢解脱苄Pd(OH)2/C催化剂中贵金属钯的循环利用，Pd回收率达到90％。节约了钯资源，并大大缩短了工艺流程。
摘要（英）：

The invention discloses a method for recycling palladium in Pd(OH)2/C catalyst for hydrogenolytic debenzylation, and belongs to the technical field of noble metal recovery. The method comprises the following steps: performing treatment on the deactivated palladium-carbon catalyst by using formic acid and H2O2 in sequence to remove most of organic substances attached to the catalyst surface and passivate the catalyst surface respectively, burning the treated deactivated catalyst in a special incinerator, dissolving the ash by using aqua regia, and preparing a novel Pd(OH)2/C catalyst directly by using an impregnation deposition process. The re-prepared Pd(OH)2/C catalyst is used in the hydrogenolytic debenzylation reaction of hexabenzylhexaazaisowurtzitane, and the activity is not reduced.The method realizes the recycling of the noble metal palladium in the Pd(OH)2/C catalyst for the hydrogenolytic debenzylation, the Pd recovery rate reaches 90%, the palladium resources are saved, andthe process flow is greatly shortened.

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