Fix Reaction ct conversions

Author: alongd

rmgpy/reaction.py

@@ -347,43 +347,53 @@ def to_cantera(self, species_list=None, use_chemkin_identifier=False):
             ct_reaction = ct.Reaction(reactants=ct_reactants, products=ct_products, rate=ct.ChebyshevRate())
 
         elif isinstance(self.kinetics, ThirdBody):
-            if ct_collider is not None:
-                ct_reaction = ct.ThreeBodyReaction(reactants=ct_reactants, products=ct_products, third_body=ct_collider)
+            if ct_collider:
+                ct_reaction = ct.Reaction(reactants=ct_reactants,
+                                          products=ct_products,
+                                          third_body=ct_collider,
+                                          rate=ct.ArrheniusRate(),
+                                          )
             else:
-                ct_reaction = ct.ThreeBodyReaction(reactants=ct_reactants, products=ct_products)
+                ct_reaction = ct.Reaction(reactants=ct_reactants,
+                                          products=ct_products,
+                                          third_body="M",
+                                          rate=ct.ArrheniusRate(),
+                                          )
 
         elif isinstance(self.kinetics, Troe):
-            if ct_collider is not None:
-                ct_reaction = ct.FalloffReaction(
+            if ct_collider:
+                ct_reaction = ct.Reaction(
                     reactants=ct_reactants,
                     products=ct_products,
-                    tbody=ct_collider,
+                    third_body=ct_collider,
                     rate=ct.TroeRate()
                 )
             else:
-                ct_reaction = ct.FalloffReaction(
+                ct_reaction = ct.Reaction(
                     reactants=ct_reactants,
                     products=ct_products,
+                    third_body="M",
                     rate=ct.TroeRate()
                 )
 
         elif isinstance(self.kinetics, Lindemann):
-            if ct_collider is not None:
-                ct_reaction = ct.FalloffReaction(
+            if ct_collider:
+                ct_reaction = ct.Reaction(
                     reactants=ct_reactants,
                     products=ct_products,
-                    tbody=ct_collider,
+                    third_body=ct_collider,
                     rate=ct.LindemannRate()
                 )
             else:
-                ct_reaction = ct.FalloffReaction(
+                ct_reaction = ct.Reaction(
                     reactants=ct_reactants,
                     products=ct_products,
+                    third_body="M",
                     rate=ct.LindemannRate()
                 )
 
         elif isinstance(self.kinetics, SurfaceArrhenius):
-            ct_reaction = ct.InterfaceReaction(
+            ct_reaction = ct.Reaction(
                 reactants=ct_reactants,
                 products=ct_products,
                 rate=ct.InterfaceArrheniusRate()
@@ -417,8 +427,6 @@ def to_cantera(self, species_list=None, use_chemkin_identifier=False):
 
         return ct_reaction
 
-
-
     def get_url(self):
         """
         Get a URL to search for this reaction in the rmg website.