PMID- 36913507 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20230328 LR - 20230328 IS - 1520-5827 (Electronic) IS - 0743-7463 (Linking) VI - 39 IP - 12 DP - 2023 Mar 28 TI - Influence of the Au-Ti Active Site of the Titanosilicate MWW Zeolite on the Catalytic Activity of Ethane Dehydrogenation in the Presence of O(2). PG - 4427-4438 LID - 10.1021/acs.langmuir.3c00083 [doi] AB - The titanosilicate zeolite with a MWW topology structure was synthesized by the atom-planting method through the dehydrochlorination of the hydroxyl group in the deboronated ERB-1 zeolite (D-ERB-1) and TiCl(4), and Au was further loaded with the deposition precipitation method to apply for the ethane direct dehydrogenation (DH) and dehydrogenation of ethane in the presence of O(2) (O(2)-DH). It was found that Au nanoparticles (NPs) below 5 nm exhibited good activity for ethane direct dehydrogenation and O(2)-DH. The addition of titanium can not only anchor more Au but also make Au have a more dispersed homogeneous distribution. The ethane O(2)-DH catalytic performances of Au-loaded Ti-incorporated D-ERB-1 (Ti-D-ERB-1) were compared to those of Au-loaded ZnO-D-ERB-1 and pure silicate D-ERB-1. The results confirm that ethane O(2)-DH catalyzed by Au-Ti paired active sites is a tandem reaction of catalytic ethane DH and selective H(2) combustion (SHC) of generated H(2). According to the experimental results and calculated kinetic parameters, such as the activation energy of DH and SHC reaction heat of O(2)-DH, SHC catalyzed by the Au/Ti-D-ERB-1 catalyst containing the Au-Ti active site can not only break the ethane dehydrogenation thermodynamic equilibrium limitation to improve the ethylene yield but also suppress the CO(2) and CO selectivity. FAU - Meng, Xu AU - Meng X AD - Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, People's Republic of China. FAU - Wu, Guiying AU - Wu G AD - Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, People's Republic of China. FAU - Cheng, Xiaojie AU - Cheng X AD - Research Institute of Petroleum Processing, Sinopec, Beijing 10083, People's Republic of China. FAU - Wang, Jing AU - Wang J AD - Key Laboratory of Catalysis, Center Tech Tianjin Chemical Research and Design Institute Company, Limited, Tianjin 300131, People's Republic of China. FAU - Peng, Aoqiang AU - Peng A AD - Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, People's Republic of China. FAU - Liang, Tingyu AU - Liang T AD - Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, People's Republic of China. FAU - Jin, Fang AU - Jin F AUID- ORCID: 0000-0001-7946-9722 AD - Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Novel Reactor & Green Chemical Technology Key Laboratory, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, People's Republic of China. LA - eng PT - Journal Article DEP - 20230313 PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 SB - IM EDAT- 2023/03/14 06:00 MHDA- 2023/03/14 06:01 CRDT- 2023/03/13 14:12 PHST- 2023/03/14 06:01 [medline] PHST- 2023/03/14 06:00 [pubmed] PHST- 2023/03/13 14:12 [entrez] AID - 10.1021/acs.langmuir.3c00083 [doi] PST - ppublish SO - Langmuir. 2023 Mar 28;39(12):4427-4438. doi: 10.1021/acs.langmuir.3c00083. Epub 2023 Mar 13.