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Biomass-based metal-loaded material and preparation method and application thereof

A supported, metal-based technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve problems such as increased costs, cumbersome steps, and environmental pollution, and achieve High loading rate, high yield and good reducibility

Active Publication Date: 2021-07-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The in-situ growth method has cumbersome steps and uses excessive reducing agents and surfactants, which not only increases the cost, but also causes pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A biomass-based metal-loaded material, comprising a lignin-tannin composite micro-nano particle carrier and gold simple substance loaded on the surface of the lignin-tannin composite micro-nano particle carrier.

[0049] The preparation method of the above-mentioned biomass-based metal-loaded material, the specific steps are:

[0050] (1) Preparation of lignin fluid: using straw as raw material, put 5 g of straw into 100 mL of a mixed solution of tetrahydrofuran and water with a volume ratio of 4:1, extract in a high-pressure reactor, extract at 120 °C for 4 h, and filter , to obtain lignin fluid.

[0051] (2) Preparation of tannin fluid: using red bayberry bark as raw material, put 10g of raw material into 100mL of acetone and water mixed solution with a volume ratio of 1:1, and extract it in an atmospheric pressure condensing reflux reactor. Extracted for 4h, filtered to obtain tannin fluid.

[0052] (3) Preparation of lignin-tannin composite micro-nano particles: M...

Embodiment 2

[0056] A biomass-based metal-loaded material, comprising a lignin-tannin composite micro-nano particle carrier and gold simple substance loaded on the surface of the lignin-tannin composite micro-nano particle carrier.

[0057] The preparation method of the above-mentioned biomass-based metal-loaded material, the specific steps are:

[0058] (1) Preparation of lignin fluid: using bamboo as raw material, put 20g of bamboo into 100mL of a mixed solution of methanol and water with a volume ratio of 1:1, extract in a high-pressure reactor, extract at 260°C for 0.5h, filter, A lignin fluid is obtained.

[0059] (2) Preparation of tannin fluid: use black wattle bark as raw material, put 10g black wattle bark into 100mL mixed solution of valerolactone and water with a volume ratio of 9:1, and use normal pressure condensation reflux reactor to carry out Extract, extract at 140°C for 0.5h, filter to obtain tannin fluid.

[0060] (3) Preparation of lignin-tannin composite micro-nano p...

Embodiment 3

[0064] A biomass-based metal-loaded material, comprising a lignin-tannin composite micro-nano particle carrier and platinum simple substance loaded on the surface of the lignin-tannin composite micro-nano particle carrier.

[0065] The preparation method of the above-mentioned biomass-based metal-loaded material, the specific steps are:

[0066] (1) Preparation of lignin fluid: using corn cobs as raw materials, put 2 g of corn cobs into 100 mL of ethanol, extract in a high-pressure reactor, extract at 160° C. for 2 h, and filter to obtain lignin fluid.

[0067] (2) Preparation of tannin fluid: take rubber bowl as raw material, put 10g of rubber bowl into 100mL volume ratio of 1:9 mixed solution of valerolactone and water, use normal pressure condensation reflux reactor to extract, at 100 Extract at ℃ for 1 h, filter to obtain tannin fluid.

[0068](3) Preparation of lignin-tannin composite micro-nano particles: Mix the above-mentioned lignin fluid and tannin fluid to obtain a...

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Abstract

The invention provides a biomass-based metal-loaded material and a preparation method and application thereof. Lignin-tannin composite micro-nano particles are adopted as a carrier, the carrier has the characteristics of reducing metal, anchoring and dispersing metal at the same time, an additional reducing agent does not need to be added for reducing metal ions, a surfactant does not need to be added for dispersing metal particles, the metal can be well reduced and highly dispersed and fixed on the composite micro-nano particle carrier, and the load rate of the metal is high. In addition, the lignin-tannin composite micro-nano particles are used as the carrier to load the metal, and the metal can be loaded on the lignin-tannin composite micro-nano particle carrier at a higher loading rate only by mixing and stirring the lignin-tannin composite micro-nano particle carrier and the metal precursor without calcining.

Description

technical field [0001] The invention relates to the field of metal-loaded materials, in particular to a biomass-based metal-loaded material and its preparation method and application. Background technique [0002] Metal-loaded materials are widely used in the fields of catalysis, biotherapy, sensing, etc. The preparation methods of metal-loaded materials in the prior art are mainly impregnation method and in-situ growth method. [0003] The impregnation method is generally to attach the metal to the carrier by impregnating the metal precursor solution, and then convert the metal precursor into a metal oxide by high-temperature calcination, and finally use hydrogen as the reducing agent to carry out the reduction reaction under high temperature conditions. , to reduce the metal oxides on the support to simple metals. The impregnation method is first calcined at high temperature and then reduced at high temperature. Using high temperature conditions for many times, the energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J31/28B01J23/38B01J23/42B01J23/44B01J23/52B01J35/02B01J35/00
CPCB01J31/26B01J31/28B01J23/42B01J23/44B01J23/52B01J23/38B01J35/50
Inventor 蒋智成石碧郭兴杰黄鑫周建飞
Owner SICHUAN UNIV
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