PMID- 36827508
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230308
LR  - 20230308
IS  - 1520-5126 (Electronic)
IS  - 0002-7863 (Linking)
VI  - 145
IP  - 9
DP  - 2023 Mar 8
TI  - Cationic Tantalum Hydrides Catalyze Hydrogenolysis and Alkane Metathesis 
      Reactions of Paraffins and Polyethylene.
PG  - 4964-4968
LID - 10.1021/jacs.2c13610 [doi]
AB  - Sulfated aluminum oxide (SAO), a high surface area material containing sulfate 
      anions that behave like weakly coordinating anions, reacts with 
      Ta( horizontal lineCH(t)Bu)(CH(2)(t)Bu)(3) to form [Ta(CH(2)(t)Bu)(2)(O-)(2)][SAO] (1). 
      Subsequent treatment with H(2) forms Ta-H(+) sites supported on SAO that are 
      active in hydrogenolysis and alkane metathesis reactions. In both reactions 
      Ta-H(+) is more active than related neutral Ta-H sites supported on silica. This 
      reaction chemistry extends to melts of high-density polyethylene (HDPE), where 
      Ta-H(+) converts 30% of a low molecular weight HDPE (M(n) = 2.5 kg mol(-1); D = 
      3.6) to low molecular weight paraffins under hydrogenolysis conditions. Under 
      alkane metathesis conditions Ta-H(+) converts this HDPE to a high MW fraction 
      (M(n) = 6.2 kDa; D = 2.3) and low molecular weight alkane products (C(13)-C(32)). 
      These results show that incorporating charge as a design element in supported 
      d(0) metal hydrides is a viable strategy to increase the reaction rate in 
      challenging reactions involving reorganization of C-C bonds in alkanes.
FAU - Gao, Jiaxin
AU  - Gao J
AD  - Department of Chemistry, University of California, Riverside, California 92521, 
      United States.
FAU - Zhu, Lingchao
AU  - Zhu L
AD  - Department of Chemistry, University of California, Riverside, California 92521, 
      United States.
FAU - Conley, Matthew P
AU  - Conley MP
AUID- ORCID: 0000-0001-8593-5814
AD  - Department of Chemistry, University of California, Riverside, California 92521, 
      United States.
LA  - eng
PT  - Journal Article
DEP - 20230224
PL  - United States
TA  - J Am Chem Soc
JT  - Journal of the American Chemical Society
JID - 7503056
SB  - IM
EDAT- 2023/02/25 06:00
MHDA- 2023/02/25 06:01
CRDT- 2023/02/24 14:53
PHST- 2023/02/25 06:00 [pubmed]
PHST- 2023/02/25 06:01 [medline]
PHST- 2023/02/24 14:53 [entrez]
AID - 10.1021/jacs.2c13610 [doi]
PST - ppublish
SO  - J Am Chem Soc. 2023 Mar 8;145(9):4964-4968. doi: 10.1021/jacs.2c13610. Epub 2023 
      Feb 24.