| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.2276 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Ni loading effect on Ni-support interactions in ethanol steam reforming over Ni/CeZrOx-Al2O3 catalysts |
| 초록 |
xNi/CeZrO-Al2O3 catalysts for ethanol steam reforming were successfully prepared at different loading amounts of Ni.Depending on the Ni loading amounts,Ni interacts with various components of the support in different priority sequences.At a low Ni amount, Ni preferentially formed NiAl2O4 phase,subsequently reducing the acidity of the catalyst to attenuate the dehydration that occurs on acidic sites of Al2O3.When the Ni content was10%, the Ni interaction with the support mainly extended to CZ to form Ni metal particles with more oxygen vacancies.For 15 and 20Ni/CZ-Al, the over-saturated Ni were located near acidic sites over Al2O3. The Ni sites surrounded by the acidic sites were responsible for coke formation.10Ni/CZ-Al showing the optimal Ni-CZ interaction resulted in the best catalytic performance owing to the combined reaction route of steam reforming over Ni and water gas shift reaction over oxygen vacancy in the CZ structure. Furthermore, the oversaturated Ni site surrounded by Al2O3 for 15 and 20Ni/CZ-Al accelerated the coke formation where C2H4 produced on the acidic sites via dehydration of ethanol were readily transformed into coke near the Ni metallic sites. |
| 저자 |
왕명연, 김상윤, Dao Duc Quang, Nguyen Phuong Anh, 신은우
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| 소속 |
울산대 |
| 키워드 |
촉매; 화학공정
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| E-Mail |
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| 원문파일 |
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