BDO Dehydrogenation filtration issues

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Hello everyone,

I am doing the BDO to GBL synthesis with a copper chromite catalyst. I’ve tried vacuum filtration with paper filters as small as .2um but it’s not working. Is there another way I can filter it out? I am stumped by this. Thanks for your time.
 
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It appears that the copper chromite catalyst has totally dissolved into the bdo. It really stinks
 
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