That confirms it indeed, I wasn't aware Ni powder already sinters at around 300C. Good to know. I wonder whether silica would do the job to prevent sintering of Ni (powder or layered on top) Recently I read Celani's patent application WO2011016014, where nickel powder is oxidized and then a silica layer is applied and baked together. Celani claims fast en large absorbtion of Hydrogen by this process.
Link to the patent application: http://patentscope.wipo.int/search/en/detailPdf.jsf?ia=IB2010053585&docIdPdf=id00000012991132&name=(WO2011016014)THIN%20NANO%20STRUCTURED%20LAYERS%20WITH%20HIGH%20CATALYTIC%20ACTIVITY%20ON%20NICKEL%20OR%20NICKEL%20ALLOY%20SURFACES%20AND%20PROCESS%20FOR%20THEIR%20PREPARATION&woNum=WO2011016014&prevRecNum=1&nextRecNum=3&recNum=1&queryString=IN%3A%28celani+francesco%29+&office=&sortOption=Pub+Date+Desc&prevFilter=&maxRec=3# On Thu, May 30, 2013 at 1:39 PM, Bob Higgins <rj.bob.higg...@gmail.com>wrote: > Nickel oxide is removed pretty easily in H2 at about 310C. Once it is > removed, you will see the sintering begin at the same temperature. The > clean Ni surfaces begin to bond and the particles begin to grow. That is > why, in part you must add the catalyst powder - to prevent the wholesale > sintering of the Ni. > > The catalyst nanopowder I have been experimenting with is Fe2O3 > nanopowder. The oxide nanopowders are much less expensive and are less > dangerous to handle. Still, they must be handled in a dry glove box > because the humidity will cause the nanopowder to agglomerate by > hydrophyllic bonding. If the nanopowder agglomerates, you may be unable to > get the nanoscale mixing onto your Ni powder. > > Bob > > > On Thu, May 30, 2013 at 5:54 AM, Teslaalset > <robbiehobbiesh...@gmail.com>wrote: > >> Just buying nickel micro powder, I assume this comes slightly oxidized. >> How would that be removed as a first step in preparing nickel powder for >> LENR experiments? >> Just heat in in a hydrogen environment at temperatures of a few hundred >> degrees C? >> >> >> > > > -- > > Regards, > Bob Higgins >
