Molding process for honeycomb boron nitride and its catalytic activity for oxidative dehydrogenation of propane
YUE Yu-meng, SHENG Jian, WANG Si-jia, WANG Dong-qi, LU An-hui
Liaoning Provincial Key Laboratory for Catalytic Conversion of Carbon Resources, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
Abstract: A honeycomb boron nitride catalyst is prepared via extrusion molding method.The impacts of water-powder ratio,sol type,sol content and hydroxypropyl methylcellulose content on molding effect are investigated.It is found that the suitable ratio of water to powder is 0.85∶1,and silica sol (mass ratio of SiO2 to boron nitride powder is 10%) and 5% hydroxypropyl methylcellulose are used as the binder.The characterization shows that boron nitride plates are directionally arranged along the extrusion direction under the action of shear stress,and spherical SiO2 particles are distributed on the surface of the plates with B-O-Si bonds formed between them.The causes of deformation and cracking in the molding process of honeycomb boron nitride are analyzed,and the feasible optimization direction is put forward.It is shown through application in the oxidative dehydrogenation of propane that honeycomb boron nitride catalyst presents better performance than powder boron nitride at a high space velocity.
岳雨蒙, 盛健, 王思佳, 王东琪, 陆安慧. 蜂窝状氮化硼成型工艺及其催化丙烷氧化脱氢性能初探[J]. 现代化工, 2022, 42(S2): 76-82.
YUE Yu-meng, SHENG Jian, WANG Si-jia, WANG Dong-qi, LU An-hui. Molding process for honeycomb boron nitride and its catalytic activity for oxidative dehydrogenation of propane. Modern Chemical Industry, 2022, 42(S2): 76-82.
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