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Catalyst for modifying and upgrading bio-oil and preparation method thereof

A bio-oil and catalyst technology, which is applied in the preparation of liquid hydrocarbon mixtures, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of unsatisfactory catalytic modification and upgrading technology, and achieve stable chemical properties and catalytic activity high effect

Pending Publication Date: 2020-06-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology mainly overcomes the above-mentioned defects of bio-oil by hydrodeoxygenating biomass pyrolysis gas catalytic reforming of main components in bio-oil, such as lignin-derived phenol, but the existing catalytic modification and upgrading technology is still not ideal

Method used

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  • Catalyst for modifying and upgrading bio-oil and preparation method thereof
  • Catalyst for modifying and upgrading bio-oil and preparation method thereof
  • Catalyst for modifying and upgrading bio-oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Configure 10wt% ammonium molybdate solution, and then mix according to the mass ratio of titanium dioxide catalyst:ammonium molybdate solution 1.2:1; after stirring for 10 minutes, a gel is formed, sealed and stored at 50°C for 4-5 hours, and then baked in an oven at 105°C Dry for 4 hours, cool, grind into powder, and then bake in a tube furnace in air atmosphere at 400°C for 6h, then at 550°C for 6h at a temperature rate of 37°C / min to shape and crystallize the catalyst , to get Mo / TiO 2 catalyst. The content of molybdenum is 1% of the total mass of the catalyst.

[0030] In order to verify the results of the synthesized catalyst, TEM, XRD, SEM, NH 3 -TPD and other characterization analysis.

[0031] Such as figure 1 As shown in the SEM image, it was found that the TiO not modified with molybdenum 2 Metal oxides and Mo / TiO 2 Compared with the catalyst, the latter is smoother, indicating that the pore structure of the unmodified catalyst is relatively weak. Althou...

Embodiment 2

[0036] In order to verify the effect of molybdenum / titanium dioxide metal oxide catalyst on hydrodeoxygenation of biomass pyrolysis oil, especially lignin-derived phenolic compounds, catalytic hydrodeoxygenation experiments were carried out in a reactor. The starting material used in the experiments was a model compound of lignin-derived phenols such as phenol. Take by weighing phenol 1g and catalyst (three groups of experiments are set up, one group does not add catalyst, one group adds molybdenum trioxide catalyst, one group adds molybdenum / titania catalyst catalyst) 0.1g (10% of light component quality), 20ml of decalinate was added to the autoclave, purged with nitrogen for 3 times to discharge the air in the autoclave, and then introduced hydrogen to P H2 = 20 Bar (2 standard atmospheres). Heating the reactor (heating rate: 10°C / min) to the specified temperature (330°C) started timing, and the total reaction time was 4 hours. After the reaction is complete, quickly cool...

Embodiment 3

[0039] In order to verify the effect of molybdenum / titanium dioxide metal oxide catalyst on the pyrolysis of lignocellulosic biomass to produce bio-oil, the catalytic pyrolysis experiment of lignocellulosic biomass and waste plastics was carried out using a catalytic fixed-bed reactor combined with a microwave pyrolysis device. The raw material used in the test is a mixture of pine wood and low-density polyethylene (LDPE addition is 25% of pine wood): 50g of pine wood raw material, molybdenum / titanium dioxide metal oxide catalyst consumption is 10% (5g) of biomass raw material, microwave absorber (Activated carbon) 2.5g, the reaction temperature of microwave pyrolysis is 550°C, the time is 8min, and the power is 750W; after the microwave pyrolysis reaction, the pyrolysis gas passes through the catalytic fixed bed for catalytic reforming reaction, and the catalytic reforming reaction temperature is 650 ℃, and the bio-oil was collected after rapid condensation. The results show ...

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Abstract

The invention belongs to the technical field of biomass conversion and reutilization, and particularly relates to a catalyst for modifying and upgrading bio-oil and a preparation method of the catalyst. According to the invention, MoO3 is added; pure TiO2 is enabled to have more weak acid and medium acid sites; the synergistic effect can increase the conversion rate of the lignin-derived phenols in the HDO process of the lignin-derived phenols; and C-O bonds in complex oxygen-containing compounds, especially lignin derivatives such as phenol and derivatives thereof, in the bio-oil can be selectively cut off under mild conditions (low H2 pressure and low reaction temperature) to produce aromatic hydrocarbons and aliphatic hydrocarbons.

Description

technical field [0001] The invention belongs to the technical field of biomass conversion and reuse, and specifically relates to a catalyst for bio-oil modification and upgrading and a preparation method thereof, in particular to a catalyst for bio-oil catalytic hydrodeoxygenation modification and upgrading and lignocellulose Catalyst for catalytic reforming of biomass and waste plastic pyrolysis gas and its preparation process. Background technique [0002] With the large-scale mining of fossil energy and its gradual depletion, people have paid more and more attention to renewable resources in recent decades, and biomass energy has gradually become one of the objects of research. my country is rich in biomass resources, including forestry residues, corn, wheat, rice and other crops, straw and rice husks, and sugarcane agricultural product processing residues. These biomass resources can reach hundreds of millions of tons per year. These agricultural and forestry wastes can...

Claims

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Application Information

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IPC IPC(8): B01J23/28C10G3/00
CPCB01J23/28C10G3/46C10G3/50Y02P30/20
Inventor 卜权孔祥海陈坤曹梦杰
Owner JIANGSU UNIV
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