1  5,744,649  2  HYDROFORMYLATION  PROCESSES  BRIEF  SUMMARY  OF THE  INVENTION  DISCLOSURE  OF THE  INVENTION  This  invention  relates  in  part  to a  process  for  separating  one or more  phosphorus  acidic  compounds  from  a  hydro› fonnylation  reaction  product  fluid  containing  said one  or  For  instance,  a  major cause  of  organophosphite  ligand  degradation  and  catalyst  deactivation  of  rhodium› organophosphite  ligand complex  catalyzed  hydrofonnyla- tion  processes  is due to  the  hydrolytic  instability  of the  organophosphite  ligands.  All  organophosphites  are suscep- It  has now  been  discovered  that water  may be  employed  to  effectively  remove  such  phosphorus  acidic  compounds  and thus  prevent  and/or lessen  hydrolytic  degradation  of  organophosphite  ligands  and  deactivation  of metal› organophosphite  ligand complex  catalysts  that may  occur  over the  course  of time  during  a  hydrofonnylation  process  directed  to  producing  aldehydes.  Although  both water  and  acid are  factors  in  the  hydrolysis  of  organophosphite  ligands,  it has been  swprisingly  discovered  that  hydroformylation  reaction  systems  are more  tolerant  of  higher levels  of water  than higher  levels of  acid. Thus,  the water  can be used  to  remove  acid and  decrease  the rate of  loss of  organophosphite  ligand  by  hydrolysis.  It  has also  been  surprisingly  discov› ered that  minimum  loss of  organophosphite  ligand occurs  when  a  hydroformylation  reaction  product  fluid  containing  a  metal-organophosphite  ligand complex  catalyst  is  contacted  with water  even at  elevated  temperatures.  Numerous  methods  have been  proposed  to  maintain  cata› lyst and/or  organophosphite  ligand stability.  For  instance,  U.S.  Pat.  No.  5.288.918  suggests  employing  a  catalytic  activity  enhancing  additive  such as  water and/or  a  weakly  acidic  compound;  U.S. Pat.  No.  5.364.950  suggests  adding  an  epoxide  to  stabilize  the  organophosphite  ligand; and  U.S.  Pat.  No.  4,774.361  suggests  carrying  out the  vaporization  separation  employed  to  recover  the  aldehyde  product  from  the  catalyst  in the  presence  of an  organic  polymer  containing  polar  functional  groups selected  from the  class  consisting  of  amide, ketone,  carbamate,  urea, and  carbonate  radicals  in  order to  prevent  and/or lessen  rhodium  precipitation  from  solution  as  rhodium  metal or  in the form  of  clusters  of  rhodium.  Notwithstanding  the value  of the  teachings  of said  references,  the search  for  alternative  methods  and  hopefully  an even  better and  more efficient  means for  stabilizing  the  rhodium  catalyst  and  organophosphite  ligand  employed  remains  an  ongoing  activity  in the art.  Indeed even  highly desirable  sterically-hindered  organo› bisphosphites  which are  not very  hydrolyzable  can react  with the  aldehyde  product  to form  poisoning  organophosphites.  e.g ..  organomonophosphites.  which are  not only  catalytic  inhibitors,  but far  more  susceptible  to  hydrolysis  and the  formation  of such  aldehyde  acid  byproducts.  e.g.,  hydroxy  alkyl  phosphonic  acids. as  shown.  for  example.  in U.S.  Pat. Nos.  5,288,918  and  5364.950.  Further,  the  hydrolysis  of  organophosphite  ligands  may be  considered  as being  autocatalytic  in view  of the  production  of such  phosphorus  acidic  compounds.  e.g .. H$_{3}$ P0$_{3}$ •  alde› hyde acids  such as  hydroxy  alkyl  phosphonic  acids,  H$_{3}$P0$_{4 }$ and the  like, and  if  left  unchecked  the  catalyst  system  of the  continuous  liquid recycle  hydrofonnylation  process  will  become  more and  more acidic  in time.  Thus in  time the  eventual  build-up  of an  unacceptable  amount  of such  phos› phorus acidic  materials  can cause  the total  destruction  of the  organophosphite  present.  thereby  rendering  the  hydroformy› lation catalyst  totally  ineffective  (  deactivated)  and the  valu- able  rhodium  metal  susceptible  to loss,  e.g., due  to  precipi› tation and/or  depositing  on the  walls of  the  reactor.  Accordingly.  a  successful  method  for  preventing  and/or  lessening  such  hydrolytic  degradation  of the  organophos› phite ligand  and  deactivation  of the  catalyst  would be  highly  desirable  to the art.  However.  notwithstanding  the  benefits  attendant  with  such  rhodium-organophosphite  ligand complex  catalyzed  liquid recycle  hydroformylation  processes.  stabilization  of  the  catalyst  and  organophosphite  ligand remains  a  primary  concern  of the  art.  Obviously  catalyst  stability  is a key  issue  in the  employment  of any  catalyst.  Loss of  catalyst  or  catalytic  activity  due to  undesirable  reactions  of the  highly  expensive  rhodium  catalysts  can be  detrimental  to the pro› duction  of the  desired aldehyde.  Likewise  degradation  of the  organophosphite  ligand  employed  during the  hydrofonny› lation process  can lead  to  poisoning  organophosphite  com› pounds•  or  inhibitors  or  acidic  byproducts  that can  lower the  catalytic  activity  of the  rhodium  catalyst.  Moreover,  pro› duction  costs of  the  aldehyde  product  obviously  increase  when  productivity  of the  catalyst  decreases.  It  is well  known  in  the art that  aldehydes  may be  readily  produced  by  reacting  an  olefinically  unsaturated  compound  with carbon  monoxide  and  hydrogen  in the  presence  of a  rhodium-organophosphite  ligand complex  catalyst  and that  preferred  processes  involve  continuous  hydroformylation  and  recycling  of the  catalyst  solution  such as  disclosed,  for  example,  in U.S. Pat.  Nos.  4,148.830;  4,717,775  and 4,769,  498. Such  aldehydes  have a wide  range of  known utility  and  are useful,  for  example,  as  intermediates  for  hydrogenation  to  aliphatic  alcohols.  for aldol  condensation  to  produce  plasticizers,  and for  oxidation  to  produce  aliphatic  acids.  2.  Background  of the  Invention  tible to  hydrolysis  in one  degree  or  another,  the rate  of  hydrolysis  of  organophosphites  in  general  being  dependent  on the  stereochemical  nature of  the  organophosphite.  In  general,  the  bulkier  the steric  environment  around the  phos- phorus  atom. the  slower the  hydrolysis  rate. For  example.  tertiary  triorganophosphites  such as  triphenylphosphite  are  more  susceptible  to  hydrolysis  than  diorganophosphites,  such as  disclosed  in U.S. Pat.  No.  4,737.588,  and  organopo› lyphosphites  such as  disclosed  in U.S.  Pat. Nos.  4,748.261  and  4.769.498.  Moreover,  all such  hydrolysis  reactions  invariably  produce  phosphorus  acidic  compounds  which  catalyze  the  hydrolysis  reactions.  For  example.  the  hydroly› sis of a  tertiary  organophosphite  produces  a  phosphonic  acid  diester,  which  is  hydrolyzable  to a  phosphonic  acid  monoester.  which  in  turn  is  hydrolyzable  to H$_{3}$PO$_{3 }$ acid.  Moreover,  hydrolysis  of the  ancillary  products  of side  reactions,  such as between  a  phosphonic  acid diester  and the  aldehyde  or  between  certain  organophosphite  ligands  and  an  aldehyde,  can lead  to  production  of  undesirable  strong  aldehyde  acids. e.g  .•  n-C$_{3}$H$_{7}$ CH(OH)P(OXOHh  This  invention  relates  to an  improved  metal› organophosphite  ligand complex  catalyzed  hydrofonnyla› tion process  directed  to  producing  aldehydes.  More particu› larly this  invention  relates  to the use  of water  to  prevent  and/or lessen  hydrolytic  degradation  of the  organophosphite  ligand and  deactivation  of the  metal-organophosphite  ligand  complex  catalyst  of such  hydroformylation  processes.  1.  Technical  Field  This  application  claims the  benefit  of  provisional  U.S.  patent  application  Ser. Nos.  60/008289,  60/008763.  60/008284  and  60/008286.  all filed  Dec. 6.  1995. and  all of  which are  incorporated  herein by  reference. 